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Forum: Main CFD Forum May 27, 2022, 06:13

Replies: 2 Partial Derivative Using Fourier Transform (FFTW) in 2D Views: 746 Posted By poly_tec The "wrong" scaling factor should already tell... The "wrong" scaling factor should already tell you what the issue is. Also, as suggested by others here: Start with 1D FFT, understand what is going on there, then do 2D via tensor extension.

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