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Process of pulsations of the spherical cavity in a liquid under the influence of ultrasonic vibrations

  • Kuznetsova, Elena L. (Department of Engineering Graphics, Moscow Aviation Institute (National Research University)) ;
  • Starovoitov, Eduard I. (Department of Building Mechanics, Belarusian State University of Transport) ;
  • Vakhneev, Sergey (Department of Engineering Graphics, Moscow Aviation Institute (National Research University)) ;
  • Kutina, Elena V. (Department of Advanced Materials and Technologies for Aerospace Applications, Moscow Aviation Institute (National Research University))
  • Received : 2020.08.19
  • Accepted : 2021.05.11
  • Published : 2022.03.25

Abstract

The paper investigates the process of pulsation of a spherical cavity (bubble) in a liquid under the influence of a source of ultrasonic vibrations. The process of pulsation of a cavitation pocket in liquid is investigated. The Kirkwood-Bethe model was used to describe the motion. A numerical solution algorithm based on the Runge-Kutta-Felberg method of 4-5th order with adaptive selection of the integration step has been developed and implemented. It was revealed that if the initial bubble radius exceeds a certain value, then the bubble will perform several pulsations until the moment of collapse. The same applies to the case of exceeding the amplitude of ultrasonic vibrations of a certain value. The proposed algorithm makes it possible to fully describe the process of cavitation pulsations, to carry out comprehensive parametric studies and to evaluate the influence of various process parameters on the intensity of cavitation.

Keywords

Acknowledgement

The work was carried out with the financial support of the grant RFBR N 20-08-00707 A.

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