9/24/2023 0 Comments Tecplot 360 ex grid plotSimply take your time accurate data set (preferably second order accurate in time) and divide it into windows of equal size. I recommend looking at Welch's method for windowing. ![]() In theory, if the window size is sufficiently sized, there will be very little variance between each window. To do the FFT, you'll want to use multiple segments of the data that over lap. The second is to perform a Fast Fourier Transform (FFT) analysis of the data. The first is an RMS (root mean square) of whatever parameter you are targeting. The best way I've seen this done is to compute two quantities. ![]() ![]() One of the more perplexing issues is determining if the transient data is eliminated from your data when computing the mean.
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