I'm running a two liquid phases simulation which performs fairly well. But, one of the liquids tends to stick to the boundaries... randomly. When a particle touches a wall, it may either follow its way, or get stuck in contact of the surface. Only one of the liquids does this. What could be the reason ?
I'm using DualSPHysics3.4_LiquidSediment_win64.exe, with a two newtonian liquid case in 3D. The liquids have different volumic mass (7000 and 2500 respectively), and different viscosities (0.007 and 2.9 respectively).