[RealENG22]

I am currently trying to mesh some geometry, the geometry is pretty simple - it consists of a single effusion cooling hole, fed by a coolant inlet. The hole exits into a mainstrain cross flow.

I have been advised to use an octree volume mesh initially, and then smooth.

Then change the mesh to delauney to ensure a better transition is achieved, and smooth again.

I then need to add around 15 layers of prisms around the wall and hole.

Has anyone got any good guide to this method? I will also need to ensure a fine mesh close to the hole and achieve a y+ < 1 which I will obviously need to work on.

My main concern is knowing how to setup the mesh to be dense in the areas necessary?

Thanks

[Far]

http://www.cfd-online.com/Forums/ans...efinement.html

You can follow these general guidelines:

1. Make the octree mesh : for this you must specify the part mesh size/surface mesh size, set global parameters specially the curvature and proximity if needed.

2. Delete volume mesh and smooth surface mesh

3. generate delaunay mesh

4. set prism parameters. Do not specify the initial height and total height. number of layers should be maximum 3 (do not go for 1 layer as it will loose the advantage). Now compute prism mesh and go to edit mesh tab. Here you will use commands. One is splitting the layers to required number of layers i.e 15 in your case and then use redistribute command to make it consistent.


You can also use the density box to get finer mesh in critical area. Also in some post siw has discussed the above method in more detail along with smoothing of mesh including prism mesh.