[rasmvs]

Hello all,

For a school project, I am trying to simulate the behavior of an underwater towed hull. The hull consists of a myring-hull shape and four rudders (two for the height and two for the lateral shear). I have tried so far to keep the mesh as fine as possible. At a speed of 3 m/s I now change the attacking angle of the elevators. Up to an angle of 20 degrees the solution converges but from 25 degrees the result does not converge anymore. Is the assumption correct that the body begins to oscillate underwater and the solution can therefore no longer converge? I have made screenshots of the settings. Does anyone have any tips to optimize the simulation?
dm.jpgmesh.jpg
And this happens from an angle of 25 degrees:
sr.jpg
the corresponding yaw of the body:
yaw.jpg

Best regards