Thank you for your answer. I saw the tutorial and followed the exact same steps but I still have the same problem. But it's not a simple 3D wing profile like on the tutorial. I enclose a picture of the realization.
However, a 3D wing profile and a wing with spars and ribs do not react in the same way to bending and twisting. For example, the stringers have a huge influence on the bending. Therefore the study of the frequencies of torsional and bending movements would be distorted.
But have you ever done your VIA flow study on a solid that takes up the volume of your part?
What you mean? Do the flow study with a 3D wing profile like on the tutorial?
As for the twisting and bending movements, it's another thing, don't mix everything up, it's not flow
I agree, but once I've defined my flow, I'll export the data to Simulation. I create an external load with flow effects and I introduce the created pressure field into Flow.