Velocity fields are diverging - incompressible analysis of hang glider

my velocity fields always start diverging , no matter how much i refine the mesh. I try to find out lift and drag numbers for a glider but i haven’t gotten any results yet. from the toturials i found its not clear to me whats going wrong.

Thx for help!

Hi there, this is Fillia, thank you for using the forum :smiley:

I have a few comments/tips:

  • You can use Symmetry and the domain sizing as in Figure 6 here: Compressible Flow Around a Wing | Tutorial | SimScale

  • Change the Wall 3 to Slip walls instead of No-slip walls, so they are modelled as an open air environment.

  • Activate the Potential flow initialization on the Simulation Control menu.

Use these guides as well when divergence occurs:

Best regards,

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thx it worked out!

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