[Nektar-users] Wall bounded incompressible flows: how to set pressure origin?

Dear all, I was trying to run a simple lid-driven cavity flow benchmark and I get rather strange results. The drag force on the lid is strongly mesh dependent, there are some numerical issues at the top right corner, the shear stress on the lid has a non-zero wall normal component and the pressure takes awfully large values across the domain. Before bothering you with setup or mesh files I was wandering if not setting a pressure origin somewhere may be causing some kind of trouble. Is it possible to set the pressure to a given value at a point of choice (e.g. p=0 on bottom left corner)? Cheers, Fer Mellibovsky