|November 9, 2011, 14:30||
Is there a way to enforce my timestep?
Join Date: Oct 2011
Posts: 56Rep Power: 6
I'm using pimpleDyMFoam to simulate a vertical axis wind turbine with a stationary outer domain and a rotating inner domain using the ggi. I would like to be able to strictly enforce my timestep. I have tried to raise my maxCo to 100 (yes, I know the implications) but the deltaT used in the solution will never go higher than 0.000556 (my desired deltaT is 0.00278 which corresponds to 1 deg rotation at 60 RPM). The maxCo in the solution is ~7.33 so it never approaches 100.
Is there another parameter I should look at to get my deltaT to where I want? Convergence doesn's seem to be an issue at this Co/deltaT (7.3/5.6e-4) yet.
|November 9, 2011, 14:40||
Join Date: Mar 2009
Location: Illinois, USA
Posts: 207Rep Power: 13
Is there a reason you cannot simply change system/controlDict such that:
This should give you a constant time step.
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