Dynamic Mesh and Sliding Mesh Simultaneously

reynold92 · May 3, 2015, 17:51

Hello everyone. I am working on a simulation where I am using sliding and dynamic mesh zones. However I am facing problems with the dynamic mesh. The mesh is getting distorted. I checked my UDF by exporting the coordinates of the nodes and plotting them on excel. They seem alright. Do you think I should let go of the sliding mesh and include its motion in the dynamic mesh UDF??
Thank you

vasava · May 7, 2015, 03:35

Can you post a picture or a diagram of your case? Also post the details of dynamic mesh setup for your case.

reynold92 · May 9, 2015, 15:26

For the dynamic mesh, I am using the following settings:
-User Defined Grid Motion
-Remeshing with local cell, local face and region face enabled using the following criteria:
*Minimum Length scale 0.001m
*Maximum Length scale 0.4m
*Max. cell skewness 0.5
*Max. Face Skewness 0.5
*Size remeshing interval 1

I have attached pictures of the mesh where negative cells are forming.

Thank you,

May 3, 2015, 17:51	Dynamic Mesh and Sliding Mesh Simultaneously	#1
reynold92 New Member Nady Kheirallah Join Date: Mar 2015 Posts: 2 Rep Power: 0	Hello everyone. I am working on a simulation where I am using sliding and dynamic mesh zones. However I am facing problems with the dynamic mesh. The mesh is getting distorted. I checked my UDF by exporting the coordinates of the nodes and plotting them on excel. They seem alright. Do you think I should let go of the sliding mesh and include its motion in the dynamic mesh UDF?? Thank you

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May 7, 2015, 03:35		#2
vasava Senior Member Paritosh Vasava Join Date: Oct 2012 Location: Lappeenranta, Finland Posts: 732 Rep Power: 22	Can you post a picture or a diagram of your case? Also post the details of dynamic mesh setup for your case.