No-slip condition

circles

Hello,
I am running a case where one of the boundaries is moving with a constant velocity. However, the particles right next to that boundary have different velocities than that of the boundary.





I also started a discussion on Github/DesignSPHsyics, when I run the simulation with same parameters on DesignSPHsyics, the solution gets unstable after some time.

Asalih3d

In current implementation of SPH in DualSPHysics the particles will never ever touch the wall. Therefore they can in principle never have the same velocity. In next version a correction for this problem has been made and can be applied to your problem.

Kind regards

circles

Thank you!