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Paper   IPM / P / 7303
School of Physics
  Title:   Effects of Bulk Viscosity in Non-linear Bubble Dynamics
1.  A. Moshaii
2.  Rasool Sadeghi-Bonabi
3.  Mohammad Taeibi-Rahni
  Status:   Published
  Journal: J. Physics: Condens. Matter
  Vol.:  16
  Year:  2004
  Pages:   1687-1694
  Supported by:  IPM
The non-linear bubble dynamics equations in a compressible liquid have been modified considering the effects of compressibility of both the liquid and the gas at the bubble interface. A new bubble boundary equation has been derived, which includes a new term resulted from the liquid bulk viscosity effects. The influence of this term has been numerically investigated considering the effects of water vapor and chemical reactions on the bubble evolution. The results clearly indicate that the new term has an important damping role at the collapse, so that its consideration decreases the amplitude of the bubble rebounds after the collapse. This damping feature is more remarkable for higher deriving pressures.

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