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How important is the liquid bulk viscosity effect on the dynamics of a single cavitation bubble?

Nazari Mahroo, H ; Sharif University of Technology

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  1. Type of Document: Article
  2. DOI: 10.1016/j.ultsonch.2018.07.013
  3. Abstract:
  4. The influence of liquid bulk viscosity on the dynamics of a single cavitation bubble is numerically studied via Gilmore model with a new modified boundary condition at bubble interface. In order to more accurately describe the interior gas thermodynamics, a hydrochemical model is used. The numerical results for an argon bubble in water and aqueous H2SO4 show that including the liquid bulk viscosity slightly affects the bubble dynamics in collapse phase. This effect becomes significant only at high ultrasonic amplitudes and high viscosities. Moreover, the maximum pressure value inside the bubble is much more influenced than the maximum temperature. This finding lends support to results of Shen et al. [25] and significantly differ from some previous results reported in the literature. © 2018 Elsevier B.V
  5. Keywords:
  6. Gilmore model ; Cavitation ; Dynamics ; Liquids ; Phase interfaces ; Thermodynamics ; Bubble interfaces ; Bulk viscosity ; Cavitation bubble ; High viscosities ; Hydrochemical modeling ; Maximum temperature ; Numerical results ; Ultrasonic amplitude ; Argon ; Water ; Aqueous solution ; Chemical reaction ; Comparative study ; Controlled study ; Evaporation ; Liquid ; Priority journal ; Surface tension ; Temperature ; Thermodynamics ; Ultrasound ; Viscosity ; Volume ; Water temperature
  7. Source: Ultrasonics Sonochemistry ; Volume 49 , 2018 , Pages 47-52 ; 13504177 (ISSN)
  8. URL: https://www.sciencedirect.com/science/article/pii/S1350417718304863