Anyone here with some knowledge on the PISO algorithm? I am doing something with my own custom PISO solver but I see ‘bad’ results compared to openFOAM. Specifically, with both openfoam and my own piso solver using 1 corrector the time step is very limited. But with openfoam multiple corrector steps massively improve stable time step whereas for my own PISO solver it does not increase the stable time step size at all. Was wondering if someone got a working small python/cpp or whatever code with a working PISO solver so i can check what im doing wrong.