How is made interpolation when using MeshSolve

[lionel]

Hi Elmer,

I use the solver MeshSolve to move my mesh every time step. My question is: when do Elmer interpolate the solutions, given in my case by the NavierStokes solver.
Is that performed at the end of MeshSolve, or maybe at the beginning of the next time step ? Or not at all and I have to do it

Cheers
Lionel

[Juha]

Hi Lionel,

No interpolation is done. The mesh movement is taken into account in the equations by default,
using the so called ALE forumulation. Needs to have full flow model* (default) in FlowSolver() in
order for this to apply.

*) either "NS Convect=True" in Equation-section or "Flow Model=full" in Solver-section

BR, Juha

[lionel]

Hi,

Really fast reply, as usual

Thanks
Lionel

[mulvrova]

Hello Juha,

what happens if you do not use full flow model, e.g. if you use flow model="stokes" ? the mesh movement is not taken into account in the equations then ?

best regards, martina.

[Juha]

Hi Martina,

yes i think this is the case, when you switch off the convection terms, you don't have the mesh movement
induced convection either. I don't off hand quite see what to make of this with Stokes model on a time
dependent setting, though. So a good question!!

Regards, Juha