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-   -   Mesh for flow 3d (http://www.cfd-online.com/Forums/flow-3d/27243-mesh-flow-3d.html)

Warren October 8, 2008 10:44

Mesh for flow 3d
 
what is the software to generate mesh for flow 3d? Does Gambit works? Thanks

michael barkhudarov October 8, 2008 22:25

Re: Mesh for flow 3d
 
No, FLOW-3D has its own, finite difference mesh generator.

Andreas October 16, 2008 04:16

Re: Mesh for flow 3d
 
Hi Warren,

when you are using Gambit, I suppose that you don't only want to generate a mesh, but you are looking also for a convenient way to make your geometry. If you are familiar with Gambit, there is a way to generate STL files, which can be used in Flow3D. But this requires an additional conversion with Tgrid, a program which is usually delvivered together with Gambit: 1. Generate the Geometry in Gambit, take care that you only have one body with solely an outside surface. 2. Mesh the surface with tri´s using the pave algorithm.

(Make only a surface mesh, no volume mesh!) 3. Save the mesh. 4. Close Gambit (after saving). 5. start tgrid in 3d mode 6. read the mesh 7. use the tgridn text interface:

> file export stl <MYSTL.STL> 8. Exit tgrid

MYSTL.stl can now be used in Flow3D : Meshing Geometry -> STL(Button)

Easy???

My alternative: Use Rhino3D for generation of medium complex geometry. This has a variety of import/export filters (STL, IGES, STEP, DWG). Price ~ 1000 $ Sometimes it is still necesseary to repair the STL's. A Reliable and fast tool is Viscam of MARCAM. ~ 1000$

Regards

Andreas


Andreas October 16, 2008 04:46

Re: Mesh for flow 3d
 
Hi Warren,

(formatting was not very readable, here again)

when you are using Gambit, I suppose that you don't only want to generate a mesh, but you are looking also for a convenient way to make your geometry. If you are familiar with Gambit, there is a way to generate STL files, which can be used in Flow3D. But this requires an additional conversion with Tgrid, a program which is usually delivered together with Gambit:

1. Generate the geometry in Gambit, take care that you only have one body with solely an outside surface.

2. Mesh the surface with tri´s using the pave algorithm.

3. Save the mesh.

4. Close Gambit (after saving).

5. Start tgrid in 3d mode

6. Read the mesh

7. Use the tgrid text interface:

> file export stl 8. Exit tgrid

MYSTL.stl can now be used in Flow3D : Meshing Geometry -> STL(Button)

Easy???

My alternative: Use Rhino3D for generation of medium complex geometry. This has a variety of import/export filters (STL, IGES, STEP, DWG). Price ~ 1000 $

Sometimes it is still necesseary to repair the STL's. A Reliable and fast tool is VisCAM Mesh of MARCAM. ~ 1000$-2000$ depending on features

Regards

Andreas


fathan November 15, 2008 08:57

Re: Mesh for flow 3d
 
i have try to create stl with 3DMaxs


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