[giano]

Dear all,
I am writing this post in order to ask if someone has ever worked with translating reference frame, in the context of rising bubbles. In particular, the physics seems clear to me (we might compute the velocity of the centroid at each time step and give this information as a boundary condition and consequently modify the momentum equation adding an extra-force term related to the acceleration of the reference frame) but i found very difficult to technically implement it. Do you have any reference or suggestion? I have already read the paper by Niethammer et. al where the procedure is explained in general.

Thanks in advance!