Geometry Mismatch

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  • Last Post 24 October 2019
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Beb99 posted this 23 October 2019

Hi all,

As many times before, I was creating a geometry and duplicating it to run many cases with the same geometry. But lately, when I was using ANSYS 16.1 I came across a problem.
When I saved the present workbench into a new one and then changed the dimensions in geometry and clicked on update in Mesh and Setup, it got updated (I could see the green tick). But it failed to solve, when I checked the setup, it said mesh data are mismatched. And after couple of tries, I decided to make a new geometry from scratch, now it's working.

The problem is when I open the older workbenches containing cases for older geometry and duplicate it within the workbench to analyse more cases like different mass flow rates, it won't run saying the mesh data is mismatched. I have solutions for the previous cases but I can't duplicate the setup to run a new case.

What I can say in simple words is changing the geometry in a new workbench is affecting the data in my older ones.

Can someone help me???

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rwoolhou posted this 23 October 2019

It means a surface label or ID has changed so the boundary setting gets confused in Fluent, it's easily fixed by manual intervention and/or careful labelling.  Given R16 is now about 4 years old I'd suggest rebuilding the model and/or rerunning in 2019R3. 

Beb99 posted this 24 October 2019

Thank you for the reply.

Is there a way to manually change the ID or surface labels???

rwoolhou posted this 24 October 2019

Yes. You can do this via Named Selections in geometry & meshing or boundary conditions in Fluent. 

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