[m.dhiman]

Hi.
I am trying to simulate the traditional problem of flow around the sphere. I want to split the sphere into two hemispheres so as to give two different Boundary conditions on the two hemispheres. I have tried splitting the region and using the adapt method but in vain.
Excited to gain knowledge through the first post of mine.

[AlexanderZ]

split it in desing modeler (on the step of making geometry)
put your bodies into 1 part,
dont forget to make name selection fro both part of sphere (give different names)

best regards

[m.dhiman]

Thank you. I have tried that design modular thing. whenever i am trying to make structured mesh in ICEM, (o-grid basically), the surface between the two hemispheres does make the mesh inappropriate, and even then, while checking the top and bottom hemsispheres, after completing the mesh, the top region contains small area, wheras top hemisphere takea a lot of bottom hemisphere.


Thank you.

[Svetlana]

"the surface between the two hemispheres does make the mesh inappropriate"


What did you do in designmodeller?


a) split


b) put the two bodies in one part


c) both (a) and (b)


" and even then, while checking the top and bottom hemsispheres, after completing the mesh, the top region contains small area, wheras top hemisphere takea a lot of bottom hemisphere."


I do not understand what this means. Please share a screenshot.

[m.dhiman]

Thank you. I have done both a and b. Unfortunately i am not able to insert the image here. can i have some other mode where i can share the screenshots

[m.dhiman]

Sorry i am upoading it in a different reply

[Svetlana]

Thanks! The mesh looks symmetric to me. Could you please rephrase the problem?

[m.dhiman]

as can be seen from the mesh, the conjunction between the two surfaces-hemispheres., the mesh is not good. whenever, i am takingb the mesh in fluent and also even in ICEM the top region of the sphere has some portion of bottom sphere. i am not able to give explicitly different BC to a expicit region on the sphere

[AlexanderZ]

picture of mesh was created from different geometry (not from pic1)

geometry is simple use ansys mesher, make makes in mesher for both parts of your sphere

best regards

[m.dhiman]

these are the two images when i created the geometry again and mesh is done in ICEM. it can be clearly seen what the bottom sphere is and what is the top sphere

[AlexanderZ]

problem comes from your name selections, there are no miracles.
I have little experience in ICEM, mostly using workbench mesher. Setting names on zones/boundaries there is straight forward

best regards