Abstract

A numerical study is carried out to bring the boundaries of cavitating flow features on S-blade with and without the ultrasound field. The monitor points of pressure and vapor fraction are created on the upper and lower surface of the blade. Strouhal number is obtained from the time variation of monitor points of pressure and vapor fraction for different cavitation number and angle of attack. The effect of ultrasound with a different frequency is applied on the cavity in the wake and its effect on drag, and a lift is explored for different angles of attack. It is found that cavity dynamics for the upper and lower surface are significantly influenced by imposed ultrasound. At lower frequency range, it enhances the cavitation activity.

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