[calim_cfd]

Originally Posted by Andrea_85

....My guess is that with small velocities the calculated force has the same order of magnitude of the oscillations and you can not filter them out.
...
Looking at your picture one thingh that comes in my mind is that this behaviour might be related to the formation of a thin flim along the wall, which is an expected/physical behavior. I attacched the "rescaled" color function in which the film is well visible.

yes i see the film too..!

as for the force maybe you cannot scape the scale issue when using a higher gravity.

then i guess that in the end there's nothing wrong with the oscillations? it's just physics (?)

i was interested in this case cuz as i told b4 i recently been through this topic and it's always nice to learn sth new!