[pro_]

I would like to know the definitions of the dynamic mesh definitions. I have a list of questions. My specific case is simulating a unsteady compressible Euler flow for a (2D) pitch-plunge airfoil.

1. What is the difference between Grid movement and Surface movement. Do both deform the mesh? For example, In the provided pitching test case (/unsteady) it uses the SURFACE_MOVEMENT= DEFORMING. Whereas, the plunging test case uses GRID_MOVEMENT= RIGID_MOTION.

2. What is the AEROELASTIC surface movement and how does is differ from the other movements?

3. I am interested in predicting the flutter boundary based on the time history of the pitch and plunge. Would the grid movement FLUTTER be appropriate to use?

4. Since I am running an unsteady case of both pitch and plunge which would be appropriate to use GRID_MOVEMENT or SURFACE_MOVEMENT (this question is due to the fact that i do not know the difference between the two)