Search Results

Showing results 1 to 2 of 2
Search took 0.00 seconds. Search: Posts Made By: ngrube

Forum: Main CFD Forum

April 10, 2009, 20:54

Replies: 107

Energy Spectrum !!!

Views: 49,969

Posted By ngrube

check your k's

I don't have Matlab (or its manual) in front of me right now, but I think your kx, ky, kz look wrong. You need to check the documentation to see what the wavenumbers are and how the FFT'd data is...

Forum: Main CFD Forum

April 7, 2009, 16:02

Replies: 107

Energy Spectrum !!!

Views: 49,969

Posted By ngrube

Let's call Vx u and call Vy v. let us call the...

Let's call Vx u and call Vy v. let us call the Fourier transforms U(kx,ky)=fft(u(x,y)) and V(kx,ky)=fft(v(x,y)).

First I would use a 2D FFT (from FFTW of matlab or whatever you want) to get...

Showing results 1 to 2 of 2

Forum Jump

All times are GMT -4. The time now is 10:21.