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What's the causes of numerical oscillation?

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Old   August 31, 2009, 06:33
Default What's the causes of numerical oscillation?
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What's the causes of numerical oscillation?

By taking the Fourier transformation, I find an oscillation in my solution with scaled wavenumber 3.14.

How such things can happen? I am using centered difference and RK method.

Thank you in advance.

Last edited by hadesmajesty; August 31, 2009 at 23:30.
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