Reply To: Moving wall
The Nguyen Ladd velocity correction is what is implemented by
The error you get for the Bouzidi boundary configuration is verly likely a geometry / indicator issue. Without knowing what exactly your code does I can only suggest to perturb the resolution one way or the other – this frequently fixes at least some discretization issues.
In the current release your best bet for moving walls in the general case is to use the resolved particle system.