Non-iterative incompressible flow solver using the classical projection ...

...scheme.

The pisoFoam solver to solve incompressible unsteady flows in OpenFOAM is iterative. Here we replaced it with an incremental projection scheme which is non-iterative therefore costs less and still keeps the second order accuracy in time. It is tested for turbulent and laminar flows. We observed that the projection solver is more stable than pisoFoam and therefore higher Courant numbers are feasible.

Additional improvement was made on the linearization of the convective flux (phi). We implemented a second order extrapolation in time to replace the first order lagged phi.