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Journal of Marine Science and Application

, Volume 16, Issue 1, pp 33–41 | Cite as

Cavitation passive control on immersed bodies

  • Khodayar Javadi
  • Mohammad Mortezazadeh Dorostkar
  • Ali Katal
Article
  • 84 Downloads

Abstract

This paper introduces a new idea of controlling cavitation around a hydrofoil through a passive cavitation controller called artificial cavitation bubble generator (ACG). Cyclic processes, namely, growth and implosion of bubbles around an immersed body, are the main reasons for the destruction and erosion of the said body. This paper aims to create a condition in which the cavitation bubbles reach a steady-state situation and prevent the occurrence of the cyclic processes. For this purpose, the ACG is placed on the surface of an immersed body, in particular, the suction surface of a 2D hydrofoil. A simulation was performed with an implicit finite volume scheme based on a SIMPLE algorithm associated with the multiphase and cavitation model. The modified k-ε RNG turbulence model equipped with a modification of the turbulent viscosity was applied to overcome the turbulence closure problem. Numerical simulation of water flow over the hydrofoil equipped with the ACG shows that a low-pressure recirculation area is produced behind the ACG and artificially generates stationary cavitation bubbles. The location, shape, and size of this ACG are the crucial parameters in creating a proper control. Results show that the cavitation bubble is controlled well with a well-designed ACG.

Keywords

flow control artificial cavitation bubble generator cavitation bubble hydrofoil passive controller Re-entrant jet immersed bodies 

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Copyright information

© Harbin Engineering University and Springer-Verlag Berlin Heidelberg 2017

Authors and Affiliations

  • Khodayar Javadi
    • 1
  • Mohammad Mortezazadeh Dorostkar
    • 2
  • Ali Katal
    • 2
  1. 1.Aerospace Engineering DepartmentSharif University of TechnologyTehranIran
  2. 2.Building, Civil & Environmental Engineering DepartmentConcordia UniversityMontrealCanada

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