Applied Scientific Research

, Volume 50, Issue 2, pp 169–188 | Cite as

Collision dynamics of bubble pairs moving through a perfect liquid

  • J. B. W. Kok


Equations are derived describing the inertial motion of a bubble pair through a perfect liquid. The relative bubble motion is driven by an interactional force induced by the centre of mass motion. This force can be derived from a potential that is proportional tos n (n≥3) and that depends on the bubble pair orientation. The path of two bubbles passing each other is investigated. The angle of deflection of the relative velocity in a two-bubble encounter is calculated numerically as a function of the impact parameter, the relative velocityg and the ratio of the centre of mass velocity componentsc2/c1. The specific conditions necessary for two bubbles to collide are determined. Ifc2/c1>1 there is a region with irregular behaviour of the deflection angle. The collision cross-section is calculated and depends smoothly ong, approximately proportional tog−1, and has a weak dependence onc2/c1.


bubbles interaction scattering deflection collision bouncing 


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Copyright information

© Kluwer Academic Publishers 1993

Authors and Affiliations

  • J. B. W. Kok
    • 1
  1. 1.Department of Thermal EngineeringUniversity of TwenteEnschedeThe Netherlands

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