Hi all,
In the "Dynamic with Consolidation calculation" type, it uses mixed u-p formulation. Does anyone know what it means by "mixed"? Does it means something special? Is it just the standard u-p formulation that is implemented?
Thank you!
Hi Ryan,
It is difficult to explain the concept of mixed u-P formulation in a simple forum post. The short story is that, in numerical analysis, we use the "displacement" and the "mixed u-P" formulations. The former has only displacements as primary unknowns and is more widely used because of its efficiency. In the latter, both displacements (u) and hydrostatic pressure (P) are taken as primary unknowns.It is called "mixed" because one solves for a set of linearised simultaneous equations having displacements and hydrostatic pressures to obtain the solution at a specific time. Finally, I am not aware of the "standard u-P formulation", but it is likely the same concept.