Overset meshing problem in Fluent

B_L_ · November 14, 2020, 07:06

Hello

I'm doing a 2D analysis of the flow around two gears. I have created structured meshes around both components and a structured background mesh. After starting up Fluent (2020R2), the overset option is not available and no background or component zones are found. The single meshes are displayed overlapping in fluent, but an interface cant be created. The boundary conditions can also not be set to overset.

I have used overset in 3D Problems before and it always worked fine.
Does anyone have an idea what may cause the Problem?

Tanks in advance

Shiv1510 · November 15, 2020, 01:08

Hi

Have you named any boundaries as overset in meshing/ or anywhere when you name it eg, wall, inlet, outlet etc ?

B_L_ · November 15, 2020, 03:54

Hi, thanks for your answer.

I named all boundaries accordingly to their functions while meshing. I actually resolved the problem by loading the Workbench Project onto a different computer (same Fluent Version).
I dont exactly know why, but on the other PC it instantly worked...

Shiv1510 · November 15, 2020, 15:05

Ok, that is great. Hey if I may ask, what post processing tool are you using to generate contour plots for overset mesh simulations ? CFD post does not do well !

B_L_ · November 16, 2020, 02:06

I just use the built in post processing tools in Fluent (at the bottom of your toolbar). You can create Contours/Vectors/Animations etc. very well in Fluent and its compatible with overset.

November 14, 2020, 07:06	Overset meshing problem in Fluent	#1
B_L_ New Member Join Date: Nov 2020 Posts: 6 Rep Power: 6	Hello I'm doing a 2D analysis of the flow around two gears. I have created structured meshes around both components and a structured background mesh. After starting up Fluent (2020R2), the overset option is not available and no background or component zones are found. The single meshes are displayed overlapping in fluent, but an interface cant be created. The boundary conditions can also not be set to overset. I have used overset in 3D Problems before and it always worked fine. Does anyone have an idea what may cause the Problem? Tanks in advance

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November 15, 2020, 01:08		#2
Shiv1510 New Member Shivank Join Date: May 2019 Posts: 27 Rep Power: 7	Hi Have you named any boundaries as overset in meshing/ or anywhere when you name it eg, wall, inlet, outlet etc ?

November 15, 2020, 03:54		#3
B_L_ New Member Join Date: Nov 2020 Posts: 6 Rep Power: 6	Hi, thanks for your answer. I named all boundaries accordingly to their functions while meshing. I actually resolved the problem by loading the Workbench Project onto a different computer (same Fluent Version). I dont exactly know why, but on the other PC it instantly worked...

November 15, 2020, 15:05		#4
Shiv1510 New Member Shivank Join Date: May 2019 Posts: 27 Rep Power: 7	Ok, that is great. Hey if I may ask, what post processing tool are you using to generate contour plots for overset mesh simulations ? CFD post does not do well !

November 16, 2020, 02:06		#5
B_L_ New Member Join Date: Nov 2020 Posts: 6 Rep Power: 6	I just use the built in post processing tools in Fluent (at the bottom of your toolbar). You can create Contours/Vectors/Animations etc. very well in Fluent and its compatible with overset.