[Daniel_Khazaei]

Hello guys

Is it possible to get a mesh like this in ICEM CFD?
if it's feasible, would you please kindly tell me how can I do it...



tnx in advance
regards

[Far]

yes. It is hybrid mesh.

Send your goemetry

[Daniel_Khazaei]

Originally Posted by Far

yes. It is hybrid mesh.

Send your goemetry

tnx for the quick reply
here is the geometry

[Far]

geometry is different than the pics you have shown

[Daniel_Khazaei]

Originally Posted by Far

geometry is different than the pics you have shown

yes, the picture is from fluent tutorial, but I want to create a mesh similar to the picture!
unstructured near the hull and structured in far-field! like this one:



Can you tell me how can I do conformal unstructured+structured mesh?

tnx

[Daniel_Khazaei]

just tried ICEM CFD tutorial and I learned how to do it, here is the initial try:

[Far]

you are on right track

[Daniel_Khazaei]

Originally Posted by Far

you are on right track

is there anyway to have a uniform surface mesh for the hull surface?
as you can see the mesh is distorted near the curve...

[Far]

I dont get these problems

[Far]

https://www.youtube.com/watch?v=fH-E...4azq1gbyqsrk0k

[Daniel_Khazaei]

Originally Posted by Far

https://www.youtube.com/watch?v=fH-E...4azq1gbyqsrk0k

thank you very much!!
Now everything is perfect...here is the final mesh:

Fluent Max Skew: 0.59
Min Orthogonal Quality: 0.32

[Far]

Part II is underway where whole process is explained.

would you like to share your process with files?

[Daniel_Khazaei]

Originally Posted by Far

Part II is underway where whole process is explained.

would you like to share your process with files?

you mean sharing the project files?

[Far]

yes if you like. and also steps you have followed

[Daniel_Khazaei]

Originally Posted by Far

yes if you like. and also steps you have followed

As I think you have already noticed, the final picture is from another geometry! I don't have the permission to share the geometry itself...

However I can provide step by step tutorial of the project with pictures, if it's OK without sharing the geometry itself

[Far]

yeah sure np. Steps will be good for others who will seet his thread in future

[Daniel_Khazaei]

1) At first I have created the domain around the hull in such a way to have a smaller box near the hull (unstructured) and a larger box away (structured):

Note, you should have interface between smaller and larger boxes!



2) then I created a material point in the smaller box by selecting point 1 and 2:



3) Now the mesh sizing is defined.



4) Then I generate the mesh for the the smaller box. It's better to check the mesh quality for any errors at this step.



5) Now save the project and disable mesh in display tree! you can also save the mesh manually if you want!

6) Now start the usual blocking approach for the structured part! the important part is to delete the block where you have already meshed with tetra.



7) After you are done with blocking, update the mesh sizing and edge refinement in pre-mesh params!

8) Now enable the pre-mesh in display tree to have your hexa mesh generated! check if everything is as expected!



9) save the blocking and disable prem-mesh in display tree!

10) enable mesh in display tree and go to file> Mesh > load from blocking!
click merge when the pop up opens!

11) Now both meshes are merged, but there is one more step to make them conformal.
go to mesh> merge nodes > merge meshes!
method: merge volume meshes
merge surface mesh part: here select the interface between two boxes!

before:


after:


it's done!

[Far]

Very nice write up. Excellent work.

Thankyou.

[Daniel_Khazaei]

Originally Posted by Far

Very nice write up. Excellent work.

Thankyou.

@Far

Would you please help me with this:

http://www.cfd-online.com/Forums/flu...ot-remesh.html

[Daniel_Khazaei]

Originally Posted by Far

Very nice write up. Excellent work.

Thankyou.

Is it possible to create and smooth the surface mesh on the hull, then use the surface mesh to generate the prism+tertra volume mesh?

I have done the patch dependent surface meshing, but always get error when trying to use the surface mesh in octree or delaunay?