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-   -   meshing the bed of a channel (http://www.cfd-online.com/Forums/ansys-meshing/73224-meshing-bed-channel.html)

antonio March 2, 2010 11:47

meshing the bed of a channel
 
Hi all.

I am modeling a rectangular channel where the bed is composed of a triangular format.

I have used the Patch Independent Method. I pretend to refine the mesh near the bed. Which is the more effectively way of doing that?

I have tried to use the sphere of influence but i don`t think itīs a comfortable way of doing what I pretend. Any suggestions that might help me?

Best Regards.

antonio March 2, 2010 12:14

In conclude, actually what I want it`s to have more triangular elements near the bed in order to get the zone of higher gradients.

Regards

PSYMN March 3, 2010 10:27

You can right click on the mesh branch to insert sizing...

Just set a smaller size on the triangle surface. (change to the face picker and select the face).

Simon

antonio March 4, 2010 11:42

Dear Simon:

Thanks a lot for your suggestion. I have followed what you mentioned but something really strange had happened.I have tried face sizing with 2 mm for the element size but when I click in the mesh branch I can`t see the body and neither the mesh .

These are the the main features of my problem:

The channel has 1.7 m in the longitudinal direction, 0.3 m of width and 0.14 m of height;

The bed consists of the contour of triangles (the base of the triangles "doesn`t exist") with 4.61 mm sides (just two sides). The space between the triangules is 1.54 mm. I pretend to have 3/4 tetra elements in the sides of this triangules.

My inputs at the moment are:

Min size = 6 mm;
Max Face Tet = 8 mm;
Mat Tet Size = 10 mm.

Do you know why this is happening?Any suggestions?
Best Regards


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