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Parametric Study fails because Zone Names/Interfaces need to be manually reassigned.

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Old   January 23, 2023, 13:35
Unhappy Parametric Study fails because Zone Names/Interfaces need to be manually reassigned.
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Bilal Hassan
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Hey guys,

I'm a new user to the forum and ANSYS Fluent, and I'd deeply appreciate your help on this problem I've been dealing with the past week.



Case: I'm running a conjugate heat transfer problem through a pipe made of two materials flowing air through it. (think: inner material metal, outer material: insulator, central channel: air)

Problem: The simulation runs perfectly well when I simulate it in the Fluent Application, however, when I attempt to run it as a parametric study, it's not able to begin the solution for the new geometries I am simulating. I believe it is changing the geometry and corresponding named selections, but is having issues updating the mesh interface/zone names.

Specific Error Messages in Workbench are:
  • (DP 1) Mesh-operation and/or zone settings are incompatible. First resolve it manually by visiting 'File->Recorded Mesh Operations->Edit Incoming Zones... -> Match Zone Names...' .
  • (DP 1) Update of the Solution component in Copy of Steady State Fluid Flow (Fluent) for Design Point 1 failed: Update Solution Failed
  • (DP 2) The Setup component in Steady State Fluid Flow (Fluent) for Design Point 2 requires user input before it can be updated. For instructions on how to address the cell in its current state, click the blue triangle in the lower right corner of the cell in the Project Schematic. Set the design point as current to see the state at the point of failure.

Update failed for the Solution component in Copy of Steady State Fluid Flow (Fluent) for Design Point 1. Update Solution Failed

Attempts to solve:
  • Change geometry to shared topology
  • Rename Named Selections to (Walls, Inlet, Outlet, Symmetry, and Cu, Inc, and Fluid) to hope ANSYS doesn't recognize any of them as an interface
  • Reset the setup case


What I would like to happen is that I am able to specify a new pipe radius, without having to go into Fluent to update the named selections or without this error showing up.

Please help

Thanks
Liverpool FC, best FC.
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Old   January 25, 2023, 20:18
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Bilal Hassan
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In case anyone else runs into this problem, here is the solution:

In DesignModeler, highlight all bodies of the part, right click, and press form new part. This (according to my limited knowledge of ANSYS) turns the model into one part with three separate bodies, that allows ANSYS to use the walls as coupled interfaces, instead of having to make new mesh interfaces each time you load fluent with a new geometry.

Doesn't hurt to also share topology as well.
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