Investigation of the mechanisms of gas-vapor cavity formation in a slit channel using spectral analysis of pressure pulsations
A.Yu. Kravtsova, S.G. Skripkin, B.R. Sharifullin, D.V. Litvinova, D.Ph. Sikovsky, D.M. Markovich
Kutateladze Institute of Thermophysics SB RAS, Novosibirsk, Russia
Keywords: cavitation, slit channel, re-entrant flow, shock wave mechanism, cloud cavitation, pressure pulsations, power spectral density for pressure pulsations
Abstract
A system of multipoint diagnostics for pressure pulsations was used in experiments. The data is compared with the results of high-speed flow visualization for the case of a cloud cavitation flow past a smooth hydrofoil in a slit channel. It was shown that the shock mechanism is significant for development of the attached cavity. The main mechanism for detachment and shedding of a cavity is a re-entrant flow.
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