This forum paper discusses phase-resolved turbulence measurements of the flow downstream of an axial turbine, and especially how phase-resolved measurements compare to time-resolved measurements. The time-resolved spectra produced higher velocity fluctuations than the corresponding phase-resolved spectra even when the periodic component was filtered out from the time-resolved measurements. The phase-resolved spectrum effectively removes all the peaks in the spectrum except for the ones associated with the blade-passage frequency.
Volume Subject Area:20th Forum on Fluid Machinery
Keywords:Turbulence measurements, Fourier decomposition, Spectral analysis, High-pressure turbine, Intermediate turbine duct
Topics:High pressure (Physics), Turbines, Turbulence
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