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-   -   [ICEM] Volume mesh gradient (http://www.cfd-online.com/Forums/ansys-meshing/106168-volume-mesh-gradient.html)

ulalala August 21, 2012 06:58

Volume mesh gradient
 
Hi all,

I am meshing a convergent divrgent nozzle in ICEM CFD. But I have been breaking my head over getting a very fine mesh on the throat area and then gradually increasing the cell size towards inlet and outlet side.

I also wanted to create boundary layer close to wall.

Please help.

ulalala August 21, 2012 07:22

I have tried the mesh density option for creating mesh size gradient, but with a expansion ratio of 1.5 the mesh size has been constant throughout.

Saumya.

diamondx August 21, 2012 08:10

a convergent-divergent nozzle is very suitable for a structured mesh. you can then use play with the space between the nodes... is it 2d or 3d ? is it structured ? also diferrent cases were discussed in this forum, please use the search button on top and see the thread that discuss this. if you don't find what you need, come back here. hope it can help...

ulalala August 22, 2012 11:14

Hi Ali,

I am trying to model it in 3D. I did try the structured mesh with the desired gradient, but the quality was very poor.

I also searched in the forum, but could not get anything :D
Can you plese share a link to the discussion, it would be very helpful.


Thanks

Saumya

diamondx August 22, 2012 11:15

can you share pictures of your mesh, or your project ? i can take a look at it


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