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Harmonic Acoustics – Problems while setting Thermo-Viscous BLI Boundary

- January 29, 2024 at 6:03 pm
  
  André Henrique
  Subscriber
  
  I just can't set Thermo-Viscous BLI Boundary for the surfaces I want.
  The model is as follows, a tube filled with air and a structure inside. I want to place a Thermo-Viscos BLI Boundary condition on the surfaces where the solid interacts with the fluid.
- January 30, 2024 at 9:18 am
  
  ErKo
  Ansys Employee
  
  Hi
  
  It can not be applied on a fluid solid interface (FSI), so on a face where the structure interacts with the acoustic region.
  The BLI goes only on outer faces of acoustic regions (not in contact with any structural bodies) – see as an example here: 41.5. Boundary Conditions and Loading (ansys.com) –
  
  See here if you can not open the above link:
  /forum/forums/topic/how-to-access-the-ansys-online-help/
  
  All the best
  Erik

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