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Speed of Convergence faster with smaller time step |
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May 15, 2012, 17:03 |
Speed of Convergence faster with smaller time step
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I have read here many times that convergence is sped up by using larger time steps, assuming the physics can handle it. However, I have noticed that convergence occurs faster and better with smaller time scales in both steady state and transient. This effect has been observed with excellent mesh stats, and simple as well as complex physics. Perhaps speed is measured by actual time to solve, but it seems to be faster in the sense of fewer iterations.
Am I doing something wrong or is this normal? |
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