57:020 Fluid Mechanics
26
Spectral analysis
FFT: Converts
a function from amplitude as function
of
time to amplitude as function of frequency
Aim: To analyze the natural unsteadiness of the separated flow, around a surface piercing
strut, using FFT.
Fast Fourier Transform
Surface piercing strut
Power spectral density
of wave elevation
Free-surface wave elevation
contours
FFT of wave elevation
Time history of wave elevation
