https://cfd-online.com/W/index.php?title=What_is_Open_Source%3F&feed=atom&action=historyWhat is Open Source? - Revision history2024-03-28T17:37:39ZRevision history for this page on the wikiMediaWiki 1.16.5https://cfd-online.com/W/index.php?title=What_is_Open_Source%3F&diff=24448&oldid=prevShreyasr: Added external links2017-12-23T05:05:27Z<p>Added external links</p>
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<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>The [http://www.openfoam.org/ OF Official Website] also contains a [http://www.openfoam.com/resources/windows.php detailed tutorial] for Windows users to setup a Virtual Operating system and install OF on it.</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>The [http://www.openfoam.org/ OF Official Website] also contains a [http://www.openfoam.com/resources/windows.php detailed tutorial] for Windows users to setup a Virtual Operating system and install OF on it.</div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins style="color: red; font-weight: bold; text-decoration: none;"></ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins style="color: red; font-weight: bold; text-decoration: none;">Another great resource for OpenFOAM tutorials is [https://holzmann-cfd.de/openfoam/ Holzmann CFD]. </ins></div></td></tr>
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<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>For CAE-Linux Users :</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>For CAE-Linux Users :</div></td></tr>
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<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>Have a look at : [https://www.youtube.com/watch?v=I82uCa7SHSQ Introduction to lattice Boltzmann - 30 Minute Lecture]</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>Have a look at : [https://www.youtube.com/watch?v=I82uCa7SHSQ Introduction to lattice Boltzmann - 30 Minute Lecture]</div></td></tr>
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<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins style="color: red; font-weight: bold; text-decoration: none;">Also check out : [http://feaforall.com/creating-cfd-solver-lattice-boltzmann-method/ FEA for All]</ins></div></td></tr>
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<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>=References=</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>=References=</div></td></tr>
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<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*[http://openedx.seas.gwu.edu/courses/GW/MAE6286/2014_fall/about Course: Practical Numerical Methods with Python (Prof Barba)]</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*[http://openedx.seas.gwu.edu/courses/GW/MAE6286/2014_fall/about Course: Practical Numerical Methods with Python (Prof Barba)]</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*[http://www.caelus-cml.com/ CAELUS] - A derivative of OpenFOAM with 'cleaned up' code and multi-platform binaries</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*[http://www.caelus-cml.com/ CAELUS] - A derivative of OpenFOAM with 'cleaned up' code and multi-platform binaries</div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins style="color: red; font-weight: bold; text-decoration: none;">*[http://feaforall.com/creating-cfd-solver-lattice-boltzmann-method/ FEA for All] - Blog post on the Lattice Boltzmann Method</ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins style="color: red; font-weight: bold; text-decoration: none;">*[https://holzmann-cfd.de/openfoam/ Holzmann CFD] - Great tutorials and material on OpenFOAM</ins></div></td></tr>
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</table>Shreyasrhttps://cfd-online.com/W/index.php?title=What_is_Open_Source%3F&diff=23220&oldid=prevShreyasr: Added a link to CAELUS2015-05-14T11:26:53Z<p>Added a link to CAELUS</p>
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<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*[http://lorenabarba.com/blog/cfd-python-12-steps-to-navier-stokes/ Prof. Lorena Barba's 12 steps to Navier Stokes using Python]</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*[http://lorenabarba.com/blog/cfd-python-12-steps-to-navier-stokes/ Prof. Lorena Barba's 12 steps to Navier Stokes using Python]</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*[http://openedx.seas.gwu.edu/courses/GW/MAE6286/2014_fall/about Course: Practical Numerical Methods with Python (Prof Barba)]</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*[http://openedx.seas.gwu.edu/courses/GW/MAE6286/2014_fall/about Course: Practical Numerical Methods with Python (Prof Barba)]</div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins style="color: red; font-weight: bold; text-decoration: none;">*[http://www.caelus-cml.com/ CAELUS] - A derivative of OpenFOAM with 'cleaned up' code and multi-platform binaries</ins></div></td></tr>
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</table>Shreyasrhttps://cfd-online.com/W/index.php?title=What_is_Open_Source%3F&diff=23203&oldid=prevShreyasr: /* Related Links */ Added external links to Prof. Barba's course on CFD using Python2015-04-28T10:44:07Z<p><span class="autocomment">Related Links: </span> Added external links to Prof. Barba's course on CFD using Python</p>
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<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*[http://www.dicat.unige.it/guerrero/OpenFOAM_course2012.html OpenFOAM course] - Very lucid presentations to begin with OpenFOAM</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*[http://www.dicat.unige.it/guerrero/OpenFOAM_course2012.html OpenFOAM course] - Very lucid presentations to begin with OpenFOAM</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*[http://su2.stanford.edu/ SU2 Official Website]</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*[http://su2.stanford.edu/ SU2 Official Website]</div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins style="color: red; font-weight: bold; text-decoration: none;">*[http://lorenabarba.com/blog/cfd-python-12-steps-to-navier-stokes/ Prof. Lorena Barba's 12 steps to Navier Stokes using Python]</ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins style="color: red; font-weight: bold; text-decoration: none;">*[http://openedx.seas.gwu.edu/courses/GW/MAE6286/2014_fall/about Course: Practical Numerical Methods with Python (Prof Barba)]</ins></div></td></tr>
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</table>Shreyasrhttps://cfd-online.com/W/index.php?title=What_is_Open_Source%3F&diff=23202&oldid=prevShreyasr: /* Getting Started */ Slight modification including reference to Prof Lorena Barba's online courses.2015-04-28T10:20:13Z<p><span class="autocomment">Getting Started: </span> Slight modification including reference to Prof Lorena Barba's online courses.</p>
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<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>Different ways exist, in which you can get started with using OSS, especially related with CFD/CAE. There are plenty of codes available, which can be found in the [http://www.cfd-online.com/Wiki/What_is_Open_Source%3F#Related_Links Related Links section] at the bottom. Fundamentally, one should know which operating system a particular software caters to because each operating system has it's own way of handling the computer and the file storage systems, not to mention the User Interface(UI).</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>Different ways exist, in which you can get started with using OSS, especially related with CFD/CAE. There are plenty of codes available, which can be found in the [http://www.cfd-online.com/Wiki/What_is_Open_Source%3F#Related_Links Related Links section] at the bottom. Fundamentally, one should know which operating system a particular software caters to because each operating system has it's own way of handling the computer and the file storage systems, not to mention the User Interface(UI).</div></td></tr>
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<tr><td class='diff-marker'>-</td><td style="background: #ffa; color:black; font-size: smaller;"><div>It has been made amply clear that open source is not restricted only to Linux based Operating systems. The objective for the section would be to eventually have comprehensive references, case studies and guides to practically using free CFD software, on both Windows and Linux. This will include reviews and links to interesting articles as well. </div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>It has been made amply clear that <ins class="diffchange diffchange-inline">'</ins>open source<ins class="diffchange diffchange-inline">' </ins>is not restricted only to Linux based Operating systems<ins class="diffchange diffchange-inline">.Thus it's possible and worthwhile to use programming languages like Python to construct CFD Solvers. [http://lorenabarba.com/blog/cfd-python-12-steps-to-navier-stokes/ Prof. Lorena Barba's courses] are an excellent starting point for this</ins>. The objective for the section would be to eventually have comprehensive references, case studies and guides to practically using free CFD software, on both Windows and Linux. This will include reviews and links to interesting articles as well. </div></td></tr>
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<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>The binaries or compiled versions of Programs that are meant for Windows, with functional GUI's are often documented enough for an end user to gain mastery of the software, and considering most Users are predominantly from a Windows background, this section outlines some popular options to get started using Linux.</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>The binaries or compiled versions of Programs that are meant for Windows, with functional GUI's are often documented enough for an end user to gain mastery of the software, and considering most Users are predominantly from a Windows background, this section outlines some popular options to get started using Linux.</div></td></tr>
</table>Shreyasrhttps://cfd-online.com/W/index.php?title=What_is_Open_Source%3F&diff=22767&oldid=prevShreyasr: /* Getting Started */2014-03-09T09:17:13Z<p><span class="autocomment">Getting Started</span></p>
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<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>=Getting Started=</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>=Getting Started=</div></td></tr>
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<tr><td class='diff-marker'>-</td><td style="background: #ffa; color:black; font-size: smaller;"><div>Different ways in which you can get started with using <del class="diffchange diffchange-inline">Open Source software</del>. There are plenty of codes available, which can be found in the [http://www.cfd-online.com/Wiki/What_is_Open_Source%3F#Related_Links Related Links section] at the bottom. Fundamentally, one should know which operating system a particular software caters to because each operating system has it's own way of handling the computer and the file storage systems, not to mention the User Interface.</div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>Different ways <ins class="diffchange diffchange-inline">exist, </ins>in which you can get started with using <ins class="diffchange diffchange-inline">OSS, especially related with CFD/CAE</ins>. There are plenty of codes available, which can be found in the [http://www.cfd-online.com/Wiki/What_is_Open_Source%3F#Related_Links Related Links section] at the bottom. Fundamentally, one should know which operating system a particular software caters to because each operating system has it's own way of handling the computer and the file storage systems, not to mention the User Interface<ins class="diffchange diffchange-inline">(UI)</ins>.</div></td></tr>
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<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>It has been made amply clear that open source is not restricted only to Linux based Operating systems. The objective for the section would be to eventually have comprehensive references, case studies and guides to practically using free CFD software, on both Windows and Linux. This will include reviews and links to interesting articles as well. </div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>It has been made amply clear that open source is not restricted only to Linux based Operating systems. The objective for the section would be to eventually have comprehensive references, case studies and guides to practically using free CFD software, on both Windows and Linux. This will include reviews and links to interesting articles as well. </div></td></tr>
</table>Shreyasrhttps://cfd-online.com/W/index.php?title=What_is_Open_Source%3F&diff=22670&oldid=prevShreyasr: /* Definition and relevance of Open source */2013-12-11T10:31:38Z<p><span class="autocomment">Definition and relevance of Open source</span></p>
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<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>If you were to ask ten different people what Open Source Software (OSS) is, you would most likely get ten different answers. The official definition can be found, from [http://www.opensource.org/osd.html The Open Source Initiative], along with guidelines and information related to an Open Source license. From an engineer's standpoint: "Open-source software ... is computer software that is ... provided under a software license that permits users to study, change, and improve the software."</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>If you were to ask ten different people what Open Source Software (OSS) is, you would most likely get ten different answers. The official definition can be found, from [http://www.opensource.org/osd.html The Open Source Initiative], along with guidelines and information related to an Open Source license. From an engineer's standpoint: "Open-source software ... is computer software that is ... provided under a software license that permits users to study, change, and improve the software."</div></td></tr>
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<tr><td class='diff-marker'>-</td><td style="background: #ffa; color:black; font-size: smaller;"><div>One should understand that the best use of Open Source software and it's chief strength lies in customising the software to your needs and going a couple of steps ahead than being an End-User and adapting to a software's limitations. Though over the years, the documentation, support and the community of OSS have expanded and improved; productive working with OSS requires a shift in attitude and some good ground work. Have a look at this [http://www.linkedin.com/groups/What-are-your-experiences-in-66032.S.258407217?view=&gid=66032&item=ANET%3AS%3A258407217&trk=NUS_RITM-title interesting Linked In discussion] related to experiences with Open Source. Another interesting article explaining how [http://caewatch.com/why-open-source-cfd-solution-is-not-for-everyone/ Open Source isn't for everyone], is worth reading.</div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>One should understand that the best use of Open Source software and it's chief strength lies in customising the software to your needs and going a couple of steps ahead than being an End-User and adapting to a software's limitations<ins class="diffchange diffchange-inline">. It involves effort and practise and if successful, can save the money spent on commercial software licenses</ins>. Though over the years, the documentation, support and the community of OSS have expanded and improved; productive working with OSS requires a shift in attitude and some good ground work. Have a look at this [http://www.linkedin.com/groups/What-are-your-experiences-in-66032.S.258407217?view=&gid=66032&item=ANET%3AS%3A258407217&trk=NUS_RITM-title interesting Linked In discussion] related to experiences with Open Source. Another interesting article explaining how [http://caewatch.com/why-open-source-cfd-solution-is-not-for-everyone/ Open Source isn't for everyone], is worth reading.</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td></tr>
<tr><td class='diff-marker'>-</td><td style="background: #ffa; color:black; font-size: smaller;"><div>For any decision, especially those related to significant cost and safety impacts, to rely on the analysis based on the results from a software package, the engineer or decision maker needs a mechanism whereby the validity of the algorithms and their implementation can be verified easily. This aspect is all the more important in the case of CFD, where several assumptions and simplifications are made in the process of breaking down the problem, into a set of parameters that can be computed with the available resources. The solvers that are used to solve complicated continuous functions and governing equations are often based on trial and error experiments and shrewd guesses and empirical basis. Other factors resulting in the increased interest in CFD, other than the boom in computing power in recent years, is the cost and feasibility of setting up the facilities to realistically experiment and study complicated physical phenomenon.</div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>For any decision, especially those related to significant cost and safety impacts, to rely on the analysis based on the results from a software package, the engineer or decision maker needs a mechanism whereby the validity of the algorithms and their implementation can be verified easily. This aspect is all the more important in the case of CFD, where several assumptions and simplifications are made in the process of breaking down the problem, into a set of parameters that can be computed with the available resources. The solvers that are used to solve complicated continuous functions and governing equations are often based on trial and error experiments and shrewd guesses and <ins class="diffchange diffchange-inline">an </ins>empirical basis. Other factors resulting in the increased interest in CFD, other than the boom in computing power in recent years, is the cost and feasibility of setting up the facilities to realistically experiment and study complicated physical phenomenon.</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>Granted, not all of us are going to go digging around in the code to determine that a particular piece of software actually cranks out viable results; however, the fact that there are a large number of other users who ARE validating and improving the code provides us with a greater sense of confidence than taking some commercial entity's word for it. There are of course technical paper's, performance comparison and validation studies done using the commercial codes. However, the huge leap ahead in the User Interfaces, available applications and ease of use of Linux operating systems, in the past few years, have made OSS and custom Linux distributions a realistic solution to providing increased efficiency at lower costs along with more freedom and possibilities of automating everyday tasks.</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>Granted, not all of us are going to go digging around in the code to determine that a particular piece of software actually cranks out viable results; however, the fact that there are a large number of other users who ARE validating and improving the code provides us with a greater sense of confidence than taking some commercial entity's word for it. There are of course technical paper's, performance comparison and validation studies done using the commercial codes. However, the huge leap ahead in the User Interfaces, available applications and ease of use of Linux operating systems, in the past few years, have made OSS and custom Linux distributions a realistic solution to providing increased efficiency at lower costs along with more freedom and possibilities of automating everyday tasks.</div></td></tr>
</table>Shreyasrhttps://cfd-online.com/W/index.php?title=What_is_Open_Source%3F&diff=20602&oldid=prevShreyasr: /* Related Links */ added link to foamcfd2013-08-04T16:01:18Z<p><span class="autocomment">Related Links: </span> added link to foamcfd</p>
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<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>External:</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>External:</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*[http://www.openfoam.com/ OpenFOAM Official Website]</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*[http://www.openfoam.com/ OpenFOAM Official Website]</div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins style="color: red; font-weight: bold; text-decoration: none;">*[http://foamcfd.org/ FoamCFD.org] contains student theses based on OpenFOAM and other documents</ins></div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*[http://www.extend-project.de/ The OpenFOAM Extend Project]</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*[http://www.extend-project.de/ The OpenFOAM Extend Project]</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*[http://www.vespalabs.org/index.php?title=Projects/Vespa_CFD%2F%2F3D_Model/OpenFOAM_Motorbike_Tutorial Vespa Labs] - Motorbike/Scooter aerodynamics with OF</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*[http://www.vespalabs.org/index.php?title=Projects/Vespa_CFD%2F%2F3D_Model/OpenFOAM_Motorbike_Tutorial Vespa Labs] - Motorbike/Scooter aerodynamics with OF</div></td></tr>
</table>Shreyasrhttps://cfd-online.com/W/index.php?title=What_is_Open_Source%3F&diff=20600&oldid=prevShreyasr: adding link to the article on cae watch2013-08-04T15:53:44Z<p>adding link to the article on cae watch</p>
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<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>If you were to ask ten different people what Open Source Software (OSS) is, you would most likely get ten different answers. The official definition can be found, from [http://www.opensource.org/osd.html The Open Source Initiative], along with guidelines and information related to an Open Source license. From an engineer's standpoint: "Open-source software ... is computer software that is ... provided under a software license that permits users to study, change, and improve the software."</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>If you were to ask ten different people what Open Source Software (OSS) is, you would most likely get ten different answers. The official definition can be found, from [http://www.opensource.org/osd.html The Open Source Initiative], along with guidelines and information related to an Open Source license. From an engineer's standpoint: "Open-source software ... is computer software that is ... provided under a software license that permits users to study, change, and improve the software."</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td></tr>
<tr><td class='diff-marker'>-</td><td style="background: #ffa; color:black; font-size: smaller;"><div>One should understand that the best use of Open Source software and it's chief strength lies in customising the software to your needs and going a couple of steps ahead than being an End-User and adapting to a software's limitations. Though over the years, the documentation, support and the community of OSS have expanded and improved; productive working with OSS requires a shift in attitude and some good ground work. Have a look at this [http://www.linkedin.com/groups/What-are-your-experiences-in-66032.S.258407217?view=&gid=66032&item=ANET%3AS%3A258407217&trk=NUS_RITM-title interesting Linked In discussion] related to experiences with Open Source.</div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>One should understand that the best use of Open Source software and it's chief strength lies in customising the software to your needs and going a couple of steps ahead than being an End-User and adapting to a software's limitations. Though over the years, the documentation, support and the community of OSS have expanded and improved; productive working with OSS requires a shift in attitude and some good ground work. Have a look at this [http://www.linkedin.com/groups/What-are-your-experiences-in-66032.S.258407217?view=&gid=66032&item=ANET%3AS%3A258407217&trk=NUS_RITM-title interesting Linked In discussion] related to experiences with Open Source<ins class="diffchange diffchange-inline">. Another interesting article explaining how [http://caewatch.com/why-open-source-cfd-solution-is-not-for-everyone/ Open Source isn't for everyone], is worth reading</ins>.</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>For any decision, especially those related to significant cost and safety impacts, to rely on the analysis based on the results from a software package, the engineer or decision maker needs a mechanism whereby the validity of the algorithms and their implementation can be verified easily. This aspect is all the more important in the case of CFD, where several assumptions and simplifications are made in the process of breaking down the problem, into a set of parameters that can be computed with the available resources. The solvers that are used to solve complicated continuous functions and governing equations are often based on trial and error experiments and shrewd guesses and empirical basis. Other factors resulting in the increased interest in CFD, other than the boom in computing power in recent years, is the cost and feasibility of setting up the facilities to realistically experiment and study complicated physical phenomenon.</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>For any decision, especially those related to significant cost and safety impacts, to rely on the analysis based on the results from a software package, the engineer or decision maker needs a mechanism whereby the validity of the algorithms and their implementation can be verified easily. This aspect is all the more important in the case of CFD, where several assumptions and simplifications are made in the process of breaking down the problem, into a set of parameters that can be computed with the available resources. The solvers that are used to solve complicated continuous functions and governing equations are often based on trial and error experiments and shrewd guesses and empirical basis. Other factors resulting in the increased interest in CFD, other than the boom in computing power in recent years, is the cost and feasibility of setting up the facilities to realistically experiment and study complicated physical phenomenon.</div></td></tr>
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<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>=Related Links=</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>=Related Links=</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td></tr>
<tr><td class='diff-marker'>-</td><td style="background: #ffa; color:black; font-size: smaller;"><div>Interesting Forum Discussions:</div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>Interesting Forum Discussions <ins class="diffchange diffchange-inline">and articles</ins>:</div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">*[http://caewatch.com/why-open-source-cfd-solution-is-not-for-everyone/ Open Source isn't for everyone on CAEWatch]</ins></div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*[http://www.linkedin.com/groupAnswers?viewQuestionAndAnswers=&discussionID=258407217&gid=66032&commentID=152959558&trk=view_disc&fromEmail=&ut=2bCkuYgN-qHRQ1 Linked In - Experiences using Open source CFD offerings]</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*[http://www.linkedin.com/groupAnswers?viewQuestionAndAnswers=&discussionID=258407217&gid=66032&commentID=152959558&trk=view_disc&fromEmail=&ut=2bCkuYgN-qHRQ1 Linked In - Experiences using Open source CFD offerings]</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*[http://www.cfd-online.com/Forums/su2/111477-why-choosing-su2.html CFD-Online SU2 Forum Thread - Why choose SU2 ?]</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*[http://www.cfd-online.com/Forums/su2/111477-why-choosing-su2.html CFD-Online SU2 Forum Thread - Why choose SU2 ?]</div></td></tr>
</table>Shreyasrhttps://cfd-online.com/W/index.php?title=What_is_Open_Source%3F&diff=20518&oldid=prevShreyasr: /* Definition and relevance of Open source */ Added a link to a Linked In discussion2013-08-02T09:49:19Z<p><span class="autocomment">Definition and relevance of Open source: </span> Added a link to a Linked In discussion</p>
<table style="background-color: white; color:black;">
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<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>If you were to ask ten different people what Open Source Software (OSS) is, you would most likely get ten different answers. The official definition can be found, from [http://www.opensource.org/osd.html The Open Source Initiative], along with guidelines and information related to an Open Source license. From an engineer's standpoint: "Open-source software ... is computer software that is ... provided under a software license that permits users to study, change, and improve the software."</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>If you were to ask ten different people what Open Source Software (OSS) is, you would most likely get ten different answers. The official definition can be found, from [http://www.opensource.org/osd.html The Open Source Initiative], along with guidelines and information related to an Open Source license. From an engineer's standpoint: "Open-source software ... is computer software that is ... provided under a software license that permits users to study, change, and improve the software."</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td></tr>
<tr><td class='diff-marker'>-</td><td style="background: #ffa; color:black; font-size: smaller;"><div>One should understand that the best use of Open Source software and it's chief strength lies in customising the software to your needs and going a couple of steps ahead than being an End-User and adapting to a software's limitations. Though over the years, the documentation, support and the community of OSS have expanded and improved; productive working with OSS requires a shift in attitude and some good ground work.</div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>One should understand that the best use of Open Source software and it's chief strength lies in customising the software to your needs and going a couple of steps ahead than being an End-User and adapting to a software's limitations. Though over the years, the documentation, support and the community of OSS have expanded and improved; productive working with OSS requires a shift in attitude and some good ground work<ins class="diffchange diffchange-inline">. Have a look at this [http://www.linkedin.com/groups/What-are-your-experiences-in-66032.S.258407217?view=&gid=66032&item=ANET%3AS%3A258407217&trk=NUS_RITM-title interesting Linked In discussion] related to experiences with Open Source</ins>.</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>For any decision, especially those related to significant cost and safety impacts, to rely on the analysis based on the results from a software package, the engineer or decision maker needs a mechanism whereby the validity of the algorithms and their implementation can be verified easily. This aspect is all the more important in the case of CFD, where several assumptions and simplifications are made in the process of breaking down the problem, into a set of parameters that can be computed with the available resources. The solvers that are used to solve complicated continuous functions and governing equations are often based on trial and error experiments and shrewd guesses and empirical basis. Other factors resulting in the increased interest in CFD, other than the boom in computing power in recent years, is the cost and feasibility of setting up the facilities to realistically experiment and study complicated physical phenomenon.</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>For any decision, especially those related to significant cost and safety impacts, to rely on the analysis based on the results from a software package, the engineer or decision maker needs a mechanism whereby the validity of the algorithms and their implementation can be verified easily. This aspect is all the more important in the case of CFD, where several assumptions and simplifications are made in the process of breaking down the problem, into a set of parameters that can be computed with the available resources. The solvers that are used to solve complicated continuous functions and governing equations are often based on trial and error experiments and shrewd guesses and empirical basis. Other factors resulting in the increased interest in CFD, other than the boom in computing power in recent years, is the cost and feasibility of setting up the facilities to realistically experiment and study complicated physical phenomenon.</div></td></tr>
</table>Shreyasrhttps://cfd-online.com/W/index.php?title=What_is_Open_Source%3F&diff=20349&oldid=prevShreyasr: Added links to Interesting Forum discussions2013-07-28T18:43:26Z<p>Added links to Interesting Forum discussions</p>
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<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>=Related Links=</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>=Related Links=</div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins style="color: red; font-weight: bold; text-decoration: none;"></ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins style="color: red; font-weight: bold; text-decoration: none;">Interesting Forum Discussions:</ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins style="color: red; font-weight: bold; text-decoration: none;">*[http://www.linkedin.com/groupAnswers?viewQuestionAndAnswers=&discussionID=258407217&gid=66032&commentID=152959558&trk=view_disc&fromEmail=&ut=2bCkuYgN-qHRQ1 Linked In - Experiences using Open source CFD offerings]</ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins style="color: red; font-weight: bold; text-decoration: none;">*[http://www.cfd-online.com/Forums/su2/111477-why-choosing-su2.html CFD-Online SU2 Forum Thread - Why choose SU2 ?]</ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins style="color: red; font-weight: bold; text-decoration: none;">*[http://www.cfd-online.com/Forums/openfoam/74841-can-someone-tell-me-more-about-vulashaka.html CFD-Online Forum thread - PyFOAM and Vulashaka]</ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins style="color: red; font-weight: bold; text-decoration: none;"></ins></div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>Internal:</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>Internal:</div></td></tr>
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<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*[http://www.cfd-online.com/Forums/openfoam/ CFD Online - OpenFOAM Forum]</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*[http://www.cfd-online.com/Forums/openfoam/ CFD Online - OpenFOAM Forum]</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*[http://www.cfd-online.com/Forums/su2/ CFD-Online - SU2 Forum]</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*[http://www.cfd-online.com/Forums/su2/ CFD-Online - SU2 Forum]</div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins style="color: red; font-weight: bold; text-decoration: none;"></ins></div></td></tr>
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<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>External:</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>External:</div></td></tr>
</table>Shreyasr