Abstract
To lay the foundations of establishing low-cost methods, which can predict characteristics of swirl distortion inexpensively, experimental investigations on the correlation between total pressure and swirl distortions of an S-duct intake model are implemented. A baffle plate is installed at the inlet of the intake model to generate strong inlet flow distortions, and the flow field at the outlet of the duct is measured using five-hole probes, which are calibrated using zonal calibration algorithm. Total pressure and swirl distortions associated with the baffle plate installed at the upper part of the intake model show no correlations. When baffle plate is installed at left/right part of the intake model, strong total pressure and swirl distortions will interact with each other, and both strength and circumferential location of the two types of distortion are well correlated by linear relationships. When baffle plate is installed at the lower part of the intake model, strong total pressure and paired swirl distortions are induced, and strength of the two types of distortion is well correlated by linear relationship.
Issue Section:
Research Papers
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