Volume Mesh in Prism Layer-Any ideas why?

renee · November 8, 2013, 03:53

Hello everybody,

I am currently facing a problem which is confusing me a lot.
I created a volume mesh but realized, that StarCCM also put volume mesh cells in my prism layer.
See a picture below:

Does anyone of you have'n idea how that could happen?

Thanks in advance,

Rene

afikr · November 9, 2013, 04:39

I think that your prism layer is too thick.
Prism layers are generated near the wall to solve near wall functions.

There is a method to calculate the prism layer thickness using geometric progression.

a=Y+ value
r=layer growth

Why not try to reduce the thickness first and increase the number of layers instead?

just my 2 cents.

cwl · November 10, 2013, 15:36

Depends on Star version; 8.04 happened to have errors in meshing (some primitive geometry case) that 8.06 doesn't.

November 8, 2013, 03:53	Volume Mesh in Prism Layer-Any ideas why?	#1
renee New Member Join Date: Aug 2013 Posts: 14 Rep Power: 12	Hello everybody, I am currently facing a problem which is confusing me a lot. I created a volume mesh but realized, that StarCCM also put volume mesh cells in my prism layer. See a picture below: Does anyone of you have'n idea how that could happen? Thanks in advance, Rene

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
[snappyHexMesh] snappyHexMesh Boundary Layer at Corner	panpanzhong	OpenFOAM Meshing & Mesh Conversion	5	July 3, 2018 05:53
Problem of simulating of small droplet with radius of 2mm	liguifan	OpenFOAM Running, Solving & CFD	5	June 3, 2014 02:53
[snappyHexMesh] Layers:problem with curvature	giulio.topazio	OpenFOAM Meshing & Mesh Conversion	10	August 22, 2012 09:03
[Commercial meshers] TGridFluent mesh with internal by prism layer and internal face for diagnostic	sponiar	OpenFOAM Meshing & Mesh Conversion	2	March 30, 2009 15:02
Icemcfd 11: Loss of mesh from surface mesh option?	Joe	CFX	2	March 26, 2007 18:10

November 9, 2013, 04:39		#2
afikr Member AHMAD Join Date: Oct 2013 Posts: 35 Rep Power: 12	I think that your prism layer is too thick. Prism layers are generated near the wall to solve near wall functions. There is a method to calculate the prism layer thickness using geometric progression. a=Y+ value r=layer growth Why not try to reduce the thickness first and increase the number of layers instead? just my 2 cents.

November 10, 2013, 15:36		#3
cwl Senior Member Chaotic Water Join Date: Jul 2012 Location: Elgrin Fau Posts: 435 Rep Power: 17	Depends on Star version; 8.04 happened to have errors in meshing (some primitive geometry case) that 8.06 doesn't.