adjust max allowed Courant based on max resid. within the last X timesteps -- CFD Online Discussion Forums

March 19, 2020, 09:55	adjust max allowed Courant based on max resid. within the last X timesteps	#1
louisgag Senior Member Louis Gagnon Join Date: Mar 2009 Location: Stuttgart, Germany Posts: 338 Rep Power: 18	I'm currently playing with systemCalls to adjust the Courant number of a pimpleFoam simulation with an abrupt start. Courant ~ 1 keeps the starting instabilities under control, but I feel I can go much higher after that. I think an efficient method would adjust the Courant number based on the maximum number of iterations required to solve the pressure field over a specified time-range up to the current time (in my case I would use a period). Does that make sense and has anyone already performed such adaptation?

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