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continue with a finer grid? DES

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Old   December 2, 2009, 06:21
Default continue with a finer grid? DES
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Hello everyone,

i have a question. Is it right that it is not allowed to interpolate a solution of a DES from a coarse to a fine grid and than continue to solve.

Thanks for your help.
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Old   December 7, 2009, 16:03
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I am not sure where you heard it. I have used such interpolation for performing calculations and did not notice any problems. However, I have heard that using delayed DES introduces a dependence on the initial condition and not the original DES. Check the paper by Frohlich and Von Terzi in Progress in Aerospace Sciences.
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Old   December 7, 2009, 16:44
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Thank you. I heard it in school from a fellow student and just wanted to be sure that I don't make any mistake.
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