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May 1, 2019, 15:14
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Local spikes in force coefficients
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New Member
jawahar sivabharathy
Join Date: Jan 2011
Posts: 12
Rep Power: 16  |
Hi all,
I'm trying to solve an unsteady flow at Re = 100. I use pisofoam solver with a time step size dt = 0.001. My residuals are so small and maximum Courant number is 0.2. The force coefficients on the model is periodic but sometime I get these spikes in both Cl and Cd. I have attached them. Could someone please explain me why this kind of behavior occurs. I will provide any additional information if required. Thanks, Jawahar. |
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