An analysis of cavitation in flat plate cascades under the interaction with sinusoidal gust flow was carried out by a singularity method based on the closed cavity model allowing the cavity length to change freely. The fluid forces and pressure distributions on the blade were calculated. The effects of cavity length and the frequency of the gust flow on the unsteady forces and pressure distributions are discussed for lower and higher solidity cascades. The results are compared with experiment on 4-bladed inducer under the interaction with inlet distortion.
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