Mesh interior and contours get destroyed in fluent

Preetham · April 2, 2020, 13:32

I'm new to ansys fluent but I've watched and read tutorials regarding my field of work, I'm working on CFD analysis over a sports car. My mesh skewness is 0.85 and I've followed proper boundary conditions for the enclosure.
The problem is that even though the mesh is perfectly healthy in workbench, it gets destroyed in fluent. There are significant abnormalities on the car body in fluent and the contours are completely destroyed.
I've changed my mesh about 14 times but no use. I'm new to this forum too, I have attached a velocity contour image to show the abnormalities, , any help would be greatly appreciated.

vinerm · April 6, 2020, 05:42

You appear to have forgotten to attach the image. If the mesh is good in Meshing or ICEMCFD, it should show up properly in Fluent. Do note that Fluent must be started in 2D or 3D as per the mesh. Secondly, if it is 2D mesh, then xy plane should be used in CAD as well as mesh. Furthermore, Fluent will load .msh file and not .meshdat that Ansys Meshing saves. You have to export it from Meshing as Fluent Input mesh.

April 2, 2020, 13:32	Mesh interior and contours get destroyed in fluent	#1
Preetham New Member Preetham Gupta Join Date: Apr 2020 Posts: 1 Rep Power: 0	I'm new to ansys fluent but I've watched and read tutorials regarding my field of work, I'm working on CFD analysis over a sports car. My mesh skewness is 0.85 and I've followed proper boundary conditions for the enclosure. The problem is that even though the mesh is perfectly healthy in workbench, it gets destroyed in fluent. There are significant abnormalities on the car body in fluent and the contours are completely destroyed. I've changed my mesh about 14 times but no use. I'm new to this forum too, I have attached a velocity contour image to show the abnormalities, , any help would be greatly appreciated. Last edited by Preetham; April 2, 2020 at 13:42. Reason: Attached images

April 6, 2020, 05:42	Image	#2
vinerm Senior Member Vinerm Join Date: Jun 2009 Location: Nederland Posts: 2,946 Blog Entries: 1 Rep Power: 35	You appear to have forgotten to attach the image. If the mesh is good in Meshing or ICEMCFD, it should show up properly in Fluent. Do note that Fluent must be started in 2D or 3D as per the mesh. Secondly, if it is 2D mesh, then xy plane should be used in CAD as well as mesh. Furthermore, Fluent will load .msh file and not .meshdat that Ansys Meshing saves. You have to export it from Meshing as Fluent Input mesh. __________________ Regards, Vinerm PM to be used if and only if you do not want something to be shared publicly. PM is considered to be of the least priority.