Dear all I have a basic question. In Freefem++ the equations are solved in matrix-forming method which is different with time stepping method. As I got from Navier-Stokes example in tutorial, the pressure is modelled by the continuity equation. Is that why for boundary conditions the velocity condi…

Pressure boundary condition

frederichecht (Frédéric Hecht) March 24, 2022, 2:25pm 2

Because the pressure is a Lagrange multiplier

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