Water surface oscillation
I simulate a pool of still water in 2D，and use measuretool to get the height of water surface，
then I find that the water surface is oscillate with no reason as show in figure.
and here is my xml file.
It seems it will also happen in 3D simulation, and after a few seconds the oscillation amplitude would reduce, but it is no use in 2D.
Does it because there are too much particles in a water depth or the initial water pressure is incorrect ?
how can I deal with the water surface oscillation ？