I am new in FreeFem and I would like to get some information on the interpolation used between two meshes.
- Given a problem with a Lagrange multiplier (e.g. the divergence free condition for the time-dependent Stokes problem), what will be the result of the interpolation between two meshes? The L2-divergence free projection? Something else?
- Is that possible to try several types of interpolation or the user does not have any control on this?
Thank you so much in advance!