[artemiss1984]

I am searching for 64 bit version of gambit.anyone have any information?

[PSYMN]

There is no Win 64 bit version of Gambit. ANSYS Inc. purchased Fluent 2 years ago and have combined the meshing developers from Gambit, TGrid, ICEM CFD, CFX Mesh and ANSYS Meshing into one very large development group working on the next generation of ANSYS Meshing. Although you are welcome to keep using Gambit (thousands will), you should also look into ANSYS DesignModeler 12.0 and ANSYS Meshing 12.0 as a possible migration upgrade from Gambit. You will find it has superior modeling and parametric capabilities, more advanced meshing, is easier to use and has lots of other advantages. Since they are combining the best tools and concepts from each of the legacy products, you will find that it also lets you keep your Gambit style sizing functions, has a new “cooper tool” (called MultiZone) etc. All the other current ANSYS Meshing tools have Win 64 bit versions.

[artemiss1984]

Dear friend thank you for your complete and useful reply.but I have another question:
what are about compatibility of these new soft wares with Fluent or prepared for Ansys CFX and are they user friend like Gambit?

Originally Posted by PSYMN

There is no Win 64 bit version of Gambit. ANSYS Inc. purchased Fluent 2 years ago and have combined the meshing developers from Gambit, TGrid, ICEM CFD, CFX Mesh and ANSYS Meshing into one very large development group working on the next generation of ANSYS Meshing. Although you are welcome to keep using Gambit (thousands will), you should also look into ANSYS DesignModeler 12.0 and ANSYS Meshing 12.0 as a possible migration upgrade from Gambit. You will find it has superior modeling and parametric capabilities, more advanced meshing, is easier to use and has lots of other advantages. Since they are combining the best tools and concepts from each of the legacy products, you will find that it also lets you keep your Gambit style sizing functions, has a new “cooper tool” (called MultiZone) etc. All the other current ANSYS Meshing tools have Win 64 bit versions.

[PSYMN]

The new ANSYS Meshing tool was developed with lots of input from the solver groups at ANSYS. It is the evolution of the CFX Mesh tool. So in that regard, it is very compatible with Fluent and CFX. It was designed for them.

Development is always an ongoing process and there are a few more things it needs before TGrid or ICEM CFD users will all want to move over. Take a look at the ANSYS website to find out more.

As for user friendliness, I have always thought it was funny when people said Gambit was easy to use. Personally, I think the ANSYS Meshing product is much easier to use than Gambit was. ANSYS meshing has many more meshing methods and tools. to choose from, so that adds more complexity, but the interface makes choosing the methods easier…

Certainly, ANSYS Meshing has the advantage of being a decade newer and it was developed with experience gained developing the Gambit product. (Three former Gambit Product managers are on the new ANSYS product management team and are responsible for Design Modeler, ANSYS Meshing and the Framework respectively.) They are joined by a former ICEM CFD and TGrid product managers and get regular input from The CFX Mesh product manager, Fluent product managers, etc. Gambit developers are also involved, etc. You will find that many of the new CAD repair buttons in DM, which replicate Gambit functionality, actually look very similar to the Gambit icons. On the other hand, un popular concepts like Gambits limiting virtual repair operations have been replace with better tools.

You will need to try it for yourself to judge…

[ghorrocks]

Hi,

There is a 64 bit version of Gambit for Linux. I have had to use it recently to generate a dirty big mesh after it made the Win32 version fall over with insufficient memory.

Glenn Horrocks

[artemiss1984]

Thank you dear friend for your complete discussion.I have a little! experience using fluent and gambit. as I know the meshing tool in the previous versions of ansys is more useful for finite element simulation in solid mechanics not for fluid mechanics especially for geometries contain complicated change in domain, where the finner grid resulotion is required! another problem is the default interior boundary condition in the gambit when a plane with different discritization is used. Ansys takes this as the wall!
anyway I should use the newer versions to find out your comments.
tnx

Originally Posted by PSYMN

The new ANSYS Meshing tool was developed with lots of input from the solver groups at ANSYS. It is the evolution of the CFX Mesh tool. So in that regard, it is very compatible with Fluent and CFX. It was designed for them.

Development is always an ongoing process and there are a few more things it needs before TGrid or ICEM CFD users will all want to move over. Take a look at the ANSYS website to find out more.

As for user friendliness, I have always thought it was funny when people said Gambit was easy to use. Personally, I think the ANSYS Meshing product is much easier to use than Gambit was. ANSYS meshing has many more meshing methods and tools. to choose from, so that adds more complexity, but the interface makes choosing the methods easier…

Certainly, ANSYS Meshing has the advantage of being a decade newer and it was developed with experience gained developing the Gambit product. (Three former Gambit Product managers are on the new ANSYS product management team and are responsible for Design Modeler, ANSYS Meshing and the Framework respectively.) They are joined by a former ICEM CFD and TGrid product managers and get regular input from The CFX Mesh product manager, Fluent product managers, etc. Gambit developers are also involved, etc. You will find that many of the new CAD repair buttons in DM, which replicate Gambit functionality, actually look very similar to the Gambit icons. On the other hand, un popular concepts like Gambits limiting virtual repair operations have been replace with better tools.

You will need to try it for yourself to judge…

[benji2642]

I'm used to ICEM v11 and im completely lost, i don't that workbench is easier to use.
The philosophy is completely different.

[Volker P.]

Originally Posted by artemiss1984

I am searching for 64 bit version of gambit.anyone have any information?

There is a 64 bit GAMBIT version for Linux. For large grids > 6 millions it seems to be the right answer. Unfortunately Fluent never managed to support OpenGL with that release whereas the 32 bit version does. It should be just vice versa, since shading with lots of geometry details and lots of cells which makes 64 bit inevitable can take some seconds with the normal graphics system X11 and becomes a burden whereas shading with OpenGl makes really fun.

Volker

[PSYMN]

Hey Ben,

I agree that for someone who has already learned (and maybe even mastered) a tool, learning something new is always work. And I agree that the philosophy is completely different.

By "easy to use", we mean in more absolute terms. In other words, starting from scratch.

To help you transition your skills, you could ask questions about how to get a particular result. For instance, how to apply curvature and proximity refinement in ANSYS Meshing (Workbench). Then someone can help you on a more specific level. After you get thru a few models you will start to see the advantages.

I have seen process comparisons between ICEM CFD and Workbench or between Gambit and workbench, were typical processes were significantly simplified in number of steps required.

Of course, there may still be a few advanced things that you just can't do in Workbench yet, but we are still closing those gaps.

In the mean time, you can keep using ICEM CFD. If you want to try out Workbench meshing, it will run of an ICEM CFD (AI*Environment) or ICEM CFD Tetra key so you can play with it without committing to it.

[mahdiii]

here we have installed a 64-bit Gambit on windows 7 64-bit.

[Volker P.]

where did you get it from? Is it a recompiled and official version? Ansys always answers that there is non 64 bit version for windows.

[m2montazari]

Originally Posted by mahdiii

here we have installed a 64-bit Gambit on windows 7 64-bit.

I think mahdi is wrong with the versions. fluent has 64 bit version for win but gambit doesn't have any. but having exceed 64 bit with gambit 32 bit, gambit works on 64 bit windows.
and about the comparison of icem and workbench and gambit, I think gambit is the most professional one and has a lot of things to make a complicated geometry and specially mapped grid which is the best type of grid in cfd problems. workbench is easiest and simplest one, and icem is in the middle! it is not so easy and it has not enough things to make a desirable mesh.

[PSYMN]

Yes, you can always find Gambit users who love the tool... They should keep using it... However m2 is just plain wrong about the order.


I have a lot of experience in all three tools and can tell you that while Gambit is good and can get the job done, ICEM CFD has a lot more flexibility and can do pretty much everything Gambit can do and a lot more besides. Most notably, ICEM CFD was missing a cooper tool, but MultiZone is a very flexible replacement at 14.0. ICEM CFD is also missing one of the Gambit prism options (the cris-cross in the corners option), and I really liked the Gambit prism preview option... The Gambit patch conforming surface mesh is nicely tied to the Gambit sizing function (which is great when you have a perfect geometry).

However, in the other direction, Gambit is missing many many options that are commonly used in ICEM CFD, including patch independent meshing, advanced hexa meshing, mesh editing (interactive and automated) and a wide range of FEA and CFD bocos and output formats. ICEM CFD can also handle very poor geometry and generate meshes of up to 1 billion cells... Gambit can't get close. And ICEM CFD isn't stuck working with Exceed... It supports about a dozen platforms directly and has shared memory parallel for most of its algorithms... ICEM CFD doesn't have all those virtual geometry headaches either.

ICEM CFD is certainly the most advanced of the three tools. Gambit is closer to ANSYS meshing (not even in the middle). In the next release or two, we expect ANSYS Meshing to supersede GAMBIT, which is why GAMBIT is no longer under development. ICEM CFD, on the other hand, is still being developed because of its importance to thousands of customers.

[Jonson]

Originally Posted by ghorrocks

Hi,

There is a 64 bit version of Gambit for Linux. I have had to use it recently to generate a dirty big mesh after it made the Win32 version fall over with insufficient memory.

Glenn Horrocks

Dear Glenn Horrocks,
Can you send me the links for downloading gambilt which can be installed in linux 64 version.

Thanks,

[aat]

Hello Jonson,

Allow me to point you to Trelis (Trelis is the name of the new version of Cubit: it, like Cubit inherits Gambit capabilities and is built on a Gambit code-base). There are some differences in naming, but for the most part, the layout and the capabilities are what you would be familiar with in Gambit. It is native 64 bit, and versions exist for Linux and Windows.

You can learn more and/or request an evaluation version at www (dot) csimsoft (dot) com.

All the best,
-Amish

(Disclaimer: I represent a distributor of this software in the US. CSimsoft is the developing company behind this effort, along with Sandia National Labs).

[PSYMN]

Hey Amish,

Nothing against your product (never tried it or saw it in action), but I need to clear up your miss-statement before you get your company in trouble

This was before my time, but people intimately involved with Gambit development tell me that portions of Gambit were built upon Cubit (government code from Sandia National Labs, used legally), and one of the founders of CSimSoft, Ted Blacker, was formerly involved with Gambit development.

However, if CSimSoft actually built Trellis upon Gambit, that would mean Ted stole IP (source code) from Fluent. I am sure he wouldn't want you spreading that rumor.

However, since Ted was intimately familiar with Gambit when he worked on Trelis, and since he also took code from Sandia, there are probably some similarities.

Saying anything more would either be scandalous or false advertising.

[Far]

Originally Posted by aat

Hello Jonson,

Allow me to point you to Trelis (Trelis is the name of the new version of Cubit: it, like Cubit inherits Gambit capabilities and is built on a Gambit code-base). There are some differences in naming, but for the most part, the layout and the capabilities are what you would be familiar with in Gambit. It is native 64 bit, and versions exist for Linux and Windows.

You can learn more and/or request an evaluation version at www (dot) csimsoft (dot) com.

All the best,
-Amish

(Disclaimer: I represent a distributor of this software in the US. CSimsoft is the developing company behind this effort, along with Sandia National Labs).

Hello Amish...

I looked on the webpage of the product and it looks similar to gambit in every aspect. But I am wondering why I haven't come across Cubit and why Gambit became so famous and Cubit is not? http://www.csimsoft.com/trelisnew.jsp

[aat]

Hello Simon,

You correctly pointed out my error in wording. My apologies. I don't wish to even remotely imply any form of code theft from ANSYS (some of us OpenFOAM-extend users are well aware of the power of the legal team at ANSYS ).My apologies to Ted and the Cubit/Trelis development team too, if I dragged their good work into any unintended controversy.

CSimsoft (developers of Trelis along with Sandia) have a short chronology of Cubit which talks about Cubit and Gambit. Anyone interested is welcome to visit this weblink:
www.csimsoft.com/about.jsp

OK, let's get back to discussing meshing...


-Amish

[aat]

Hello Far,

That is a good and fair observation. I can only hazard a couple of guesses:

1. FLUENT came bundled with Gambit, so another Gambit-like product (that needed to be licensed and cost $) would not interest FLUENT users. Besides, Gambit was a perfectly fine and sufficient mesher for most FLUENT use. Only now (when ANSYS has started licensing Gambit separately, and may stop supporting it altogether down the road) are ex-Gambit users looking for a Gambit-like alternative.
2. The Cubit user community is much smaller than the FLUENT user base, and mostly consists of engineers who collaborate with Sandia, use Sandia codes, university researchers, Govt. labs etc. Further, most of these applications are FEA based (Structural, EM, etc.) and are not CFD codes; hence a much smaller visibility in the CFD world, right now. Just to clarify: Trelis/Cubit do export FLUENT .msh files.

(Hopefully we don't upset too many Gambit and ANSYS meshing users by going off on a tangent on Cubit/Trelis. I am perfectly happy to continue this discussion, maybe we move it to the CFD Lounge Forum instead?)

-Amish

[PSYMN]

Originally Posted by aat

Hello Far,

...

(Hopefully we don't upset too many Gambit and ANSYS meshing users by going off on a tangent on Cubit/Trelis. I am perfectly happy to continue this discussion, maybe we move it to the CFD Lounge Forum instead?)

-Amish

No one is upset. The original question was about 64bit Gambit; I am sure you were just offering another "out of the box" solution, so only slightly tangential. I just wanted to help you adjust you initial statement before it caused you any trouble. I think that link you posted should clear things up.

Have a great week.

(By the way, I should re-iterate for the record that I am here on my own and not on behalf of ANSYS, my thoughts are my own.)