what does PSD plot revels for flow over airfoil and plate? What physical interpretation we get from PSD plot for aerodynamics point of view? why we are plotting PSD v/s Frequency? Please Give some notes related to flow physics related with PSD plot.
If you square the PSD, then you get the corresponding component's energy spectrum. There is this theory for homogeneous isotropic turbulence, which displays typical feature of the energy spectrum and this is often used to check the accuracy of numerical methods and resolution. Measured or computed energy spectrum is often also used to quantify inhomogenity of developed flows. You can see this discussed in the books on turbulence. Computational aspect is mostly in the literature and to some extent, in my book: High Accuracy Computing Method (CUP, 2013)
If you square the PSD, then you get the corresponding component's energy spectrum. There is this theory for homogeneous isotropic turbulence, which displays typical feature of the energy spectrum and this is often used to check the accuracy of numerical methods and resolution. Measured or computed energy spectrum is often also used to quantify inhomogenity of developed flows. You can see this discussed in the books on turbulence. Computational aspect is mostly in the literature and to some extent, in my book: High Accuracy Computing Method (CUP, 2013)
I agree, I just add that the power spectra is a way to see specific peaks at certain wavenumbers that can be easily converted in energy at flow scale of corresponding length
Dear Sengupta sir
Thanks for your valuable comments I will look into the suggestion and will go through you book after that I will again contact you sir.
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