Vol. 2, No. 10, 2007

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Two-dimensional shock induced collapse of gas bubble near a semiinfinite deformable solid

Wenfeng Xie and Yin Lu Young

Vol. 2 (2007), No. 10, 1881–1900

In this paper, the effect of shock-induced collapse of a single gas bubble on the transient fluid and solid response is numerically investigated. The jet-like bubble collapse and subsequent strong pressure loading on a nearby semiinfinite deformable solid structure are captured and simulated using a multiphase compressible hydrodynamic model. The objective is to understand the fluid-structure interaction mechanisms, including the effect of the compressibility of the solid medium on the bubble dynamics and shock wave propagation, and the effect of shock wave propagation on the transient stress distribution within the solid. Numerical results demonstrate that the bubble collapse can impart very high pressure pulses to the nearby structure, leading to very high stresses sustained by the solid. The solid can experience significant deformation, including yielding, depending on the local fluid conditions.

bubble collapse, multiphase model, fluid-structure interaction, shock-bubble interaction
Received: 18 May 2007
Accepted: 23 May 2007
Published: 1 December 2007
Wenfeng Xie
Dept of Civil and Environmental Engineering
E-228, EQUAD
Princeton University
Princeton, New Jersey 08544
United States
Yin Lu Young
Dept of Civil and Environmental Engineering
E-326, EQUAD
Princeton University
Princeton, New Jersey 08544
United States