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-   -   very small time step in GMO model (https://www.cfd-online.com/Forums/flow-3d/91486-very-small-time-step-gmo-model.html)

shyam August 12, 2011 05:37
very small time step in GMO model
 
Hi,
I am modeling a rotating part (using GMO) at an rpm of 1200 with a viscous material of 10000 cps. I get a time step of 1e-8/1e-9s, while the time step for courant number to be equal to 1 is approx. 1e-3. What are the contributing factors for a very low time step in GMO model? How can I reduce the time step?

MuxaB December 12, 2011 00:26
What's the code for the stability limit on the time step? 'vs' or 'cx', 'cy', 'cz'?


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