[quarkz]

Hi,

I'm trying to simulate a flow past moving wing.

I create my own routine to move the wing.

The simulation works fine until around 0.44s, whereby it diverges.

Mesh check shows that the mesh quality starts to drop from t=0.4.

Since I need to run till t=1, I need to ensure the mesh quality does not drop.

I have tried to:

1. reduce time step
2. change different meshing

but it doesn't help.

I saw a video on youtube by wolf dynamics:

https://www.youtube.com/watch?v=QEGnNLvQVfA&t=1047s

At runtime 19.02: They use body fitted mesh with re-meshing.

How is this done? Is it possible to automatically re-meshing the entire domain when the mesh quality drops below a certain level?

Or can I do it manually? So maybe at t=0.4 when the mesh quality is dropping, I stop the simulation, re-mesh, copy data to new mesh, and continue running. Is it possible?

Thanks in advance.