[blockMesh] 2D airfoil optimisation the mesh

martapajon · February 4, 2008, 14:36

Dear all,

I would need to apply Genetic Algorithms optimisation to optimise a 2D airfoil shape.
The main problem that I am facing is to mesh the airfoil and moreover to use the mesh from one shape to another in order to reduce the computational expenses (GA involves a lot of evaluations.
Due to this is an academic study ( I am an MSc student) I am not allowed to use commercial software, so I would need to mesh with BlockMesh or another free software.
I have read in one thread (http://www.cfd-online.com/cgi-bin/Op...cus/discus.cgi ) that BlockMesh is suitable for most 2D cases but in another thread (http://www.cfd-online.com/cgi-bin/Op...cus/discus.cgi ) seems to be the opposite.

Is there any way to do this with BlockMesh or any free software easy to use? Is there any database or any test case than can give me an example or a mesh that I could use?

Please, I would be very grateful if you give me some information, help or advice, I am really worried about this.

Best Regards,

Marta Pajon.

martapajon · February 4, 2008, 16:20

Well, in fact what I have to do is to apply the GA optimisation to some 2D shape related with aerodynamics, so if you think there is another posibility easier than the airfoil,please let me know.

Marta.

airfoil · February 5, 2008, 06:43

I know about a commercial software that can give change shape as parameter. Try Hypermesh morphing from Altair.

Leong

martapajon · February 5, 2008, 17:37

What about the files conteined in links as http://www.grc.nasa.gov/WWW/wind/val.../raetaf01.html ? are this grids suitable to use in OpenFOAM? Could I use them to run some airfoil example?

Please, just a quick yes or not would be very helpful for me.
Best regards,

Marta

martapajon · February 5, 2008, 17:53

Sorry but the post before was not complete. I know there is a converter utility: plot3dToFoam and I think it is ok for using the files that are included in the link that I was speaking about before. Is that right? does it means that the mesh would be generate just with this file?Thank you very much.

Edward! · May 12, 2010, 18:53

Hi!!

I am working with genetic algorithms used for optimization of turbine blades could someone recommend a good book or an article please!!!

Thank you very much

desert_1250 · May 13, 2011, 16:30

edward,
your question is my demand too, i am very glad if give me any advise
tnx
________
Rasoul

Edward! · May 13, 2011, 17:53

Sure!!

First the thesis most recently it was written for ÖZHAN ÖKSÜZ is a Doctoral thsesis (MULTIPLOID GENETIC ALGORITHMS FOR MULTI-OBJECTIVE
TURBINE BLADE AERODYNAMIC OPTIMIZATION December 2007)
This is my best reference, he use 2 diferents fitness funtion; I use only one
iso-entopic efficiency

If you dont Kwon anithyng about Genetc Algorithms first you have to read
Introduction to Genetic Algorithms S.N Sivanandam S.N. Deepa

And its important that you define 3D or 2D meshs

Those are my recommendations!!

Another reference would be my Masters thesis but I will end this year!!

Greetings!!

Eduardo Chavolla

desert_1250 · May 14, 2011, 04:18

tax a lot for your quickly response dear Eduardo

i am waiting for your master thesis

i gone optimize blade surface, do you know a bout this with OpenFOAM? or how do it with OF?

best regards
____________
Rasoul

Edward! · May 14, 2011, 14:33

Sorry man!!

I use GAMBIT to ceate my meshes and Turbo Volumens ; and I simulate in ANSYS 12.1 using Non-reflecting boundary conditions; for the chock wave

Greetings!!

February 4, 2008, 14:36	2D airfoil optimisation the mesh	#1
martapajon New Member Marta Pajon Join Date: Mar 2009 Posts: 21 Rep Power: 17	Dear all, I would need to apply Genetic Algorithms optimisation to optimise a 2D airfoil shape. The main problem that I am facing is to mesh the airfoil and moreover to use the mesh from one shape to another in order to reduce the computational expenses (GA involves a lot of evaluations. Due to this is an academic study ( I am an MSc student) I am not allowed to use commercial software, so I would need to mesh with BlockMesh or another free software. I have read in one thread (http://www.cfd-online.com/cgi-bin/Op...cus/discus.cgi ) that BlockMesh is suitable for most 2D cases but in another thread (http://www.cfd-online.com/cgi-bin/Op...cus/discus.cgi ) seems to be the opposite. Is there any way to do this with BlockMesh or any free software easy to use? Is there any database or any test case than can give me an example or a mesh that I could use? Please, I would be very grateful if you give me some information, help or advice, I am really worried about this. Best Regards, Marta Pajon.

February 4, 2008, 16:20	Well, in fact what I have to d	#2
martapajon New Member Marta Pajon Join Date: Mar 2009 Posts: 21 Rep Power: 17	Well, in fact what I have to do is to apply the GA optimisation to some 2D shape related with aerodynamics, so if you think there is another posibility easier than the airfoil,please let me know. Marta.

February 5, 2008, 06:43	I know about a commercial soft	#3
airfoil New Member Leong Join Date: Mar 2009 Location: Malaysia Posts: 20 Rep Power: 17	I know about a commercial software that can give change shape as parameter. Try Hypermesh morphing from Altair. Leong

February 5, 2008, 17:37	What about the files conteined	#4
martapajon New Member Marta Pajon Join Date: Mar 2009 Posts: 21 Rep Power: 17	What about the files conteined in links as http://www.grc.nasa.gov/WWW/wind/val.../raetaf01.html ? are this grids suitable to use in OpenFOAM? Could I use them to run some airfoil example? Please, just a quick yes or not would be very helpful for me. Best regards, Marta

February 5, 2008, 17:53	Sorry but the post before was	#5
martapajon New Member Marta Pajon Join Date: Mar 2009 Posts: 21 Rep Power: 17	Sorry but the post before was not complete. I know there is a converter utility: plot3dToFoam and I think it is ok for using the files that are included in the link that I was speaking about before. Is that right? does it means that the mesh would be generate just with this file?Thank you very much.

May 12, 2010, 18:53	genetic algorithm	#6
Edward! New Member Eduardo Chavolla Join Date: May 2010 Location: Mexico City Posts: 16 Rep Power: 16	Hi!! I am working with genetic algorithms used for optimization of turbine blades could someone recommend a good book or an article please!!! Thank you very much

May 13, 2011, 16:30		#7
desert_1250 Member s.rasoul_varedi Join Date: Feb 2010 Posts: 82 Rep Power: 15	edward, your question is my demand too, i am very glad if give me any advise tnx ________ Rasoul

May 13, 2011, 17:53	Gas Turbine optimization	#8
Edward! New Member Eduardo Chavolla Join Date: May 2010 Location: Mexico City Posts: 16 Rep Power: 16	Sure!! First the thesis most recently it was written for ÖZHAN ÖKSÜZ is a Doctoral thsesis (MULTIPLOID GENETIC ALGORITHMS FOR MULTI-OBJECTIVE TURBINE BLADE AERODYNAMIC OPTIMIZATION December 2007) This is my best reference, he use 2 diferents fitness funtion; I use only one iso-entopic efficiency If you dont Kwon anithyng about Genetc Algorithms first you have to read Introduction to Genetic Algorithms S.N Sivanandam S.N. Deepa And its important that you define 3D or 2D meshs Those are my recommendations!! Another reference would be my Masters thesis but I will end this year!! Greetings!! Eduardo Chavolla

May 14, 2011, 04:18		#9
desert_1250 Member s.rasoul_varedi Join Date: Feb 2010 Posts: 82 Rep Power: 15	tax a lot for your quickly response dear Eduardo i am waiting for your master thesis i gone optimize blade surface, do you know a bout this with OpenFOAM? or how do it with OF? best regards ____________ Rasoul

May 14, 2011, 14:33		#10
Edward! New Member Eduardo Chavolla Join Date: May 2010 Location: Mexico City Posts: 16 Rep Power: 16	Sorry man!! I use GAMBIT to ceate my meshes and Turbo Volumens ; and I simulate in ANSYS 12.1 using Non-reflecting boundary conditions; for the chock wave Greetings!!

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
[ANSYS Meshing] 3D Inflation mesh on an airfoil	kennyboy	ANSYS Meshing & Geometry	1	April 26, 2017 04:12
Airfoil simulation solution interfered by mesh	Dvergr	OpenFOAM Running, Solving & CFD	1	September 28, 2014 03:05
[Other] 2D hex mesh on multi element airfoil	Verfblikje	OpenFOAM Meshing & Mesh Conversion	0	January 19, 2012 11:55
[Gmsh] 2D Mesh Generation Tutorial for GMSH	aeroslacker	OpenFOAM Meshing & Mesh Conversion	12	January 19, 2012 04:52
2D airfoil optimisation: the mesh	Marta	Main CFD Forum	5	February 6, 2008 02:07