Numerical study of the shock wave and pressure induced by single bubble collapse near planar solid wall

Abstract

Bubble collapse is one of the leading causes for the cavitation erosion of submerged structures. For better understanding of the destructive mechanism of cavitation, high-fidelity simulation is performed to simulate the complete process of single bubble collapse near a planar solid wall. The wave propagation method with the approximate Riemann solver Harten Lax and van Leer Contact is adopted to solve the compressible two-phase five-equation model. We implement fifth-order weighted essentially non-oscillatory scheme with the block-structured adaptive mesh method to resolve shock waves and moving interface with high-resolution. We simulate single bubble collapsing in free-field to validate the present numerical methods and solver. Our results (e.g., averaged bubble-interior pressure and the radius variation) are found in excellent agreement with the theoretical Keller–Miksis solutions. In this study, the shock wave transmitted inside the bubble and the water-hammer shock formed in the liquid are under quantitative investigation. Numerical results reveal that the interactions between the shock wave and bubble interface give rise to peak pressures of liquid phase, and the initial stand-off distances have important influence on shock wave pattern, wall peak pressure, and bubble dynamics.

A review of bubble collapse near particles

“…Bubble-particle interactions are among the most important features of cavitation and bubble dynamics in silt-laden flows (Gao et al, 2022;Zhang et al, 2016;Duan and Karelin, 2003;Zhou et al, 2009;Dular and Petkovšek, 2015). For example, the jets and shock waves generated by bubble collapse near particles can cause damage to components in various types of pumps and turbines, such as pumps for lifting water and hydroturbines for electricity generation (Lai et al, 2022;Geng et al, 2021;Luo et al, 2018;Bai et al, 2008;Yang et al, 2021). In this context, a review of current progress in research on the interaction between bubbles and particles will be of great use.…”

Numerical and experimental investigations on the jet and shock wave dynamics during the cavitation bubble collapsing near spherical particles based on OpenFOAM

“…Wen et al [32] reported that the compressed liquid surrounding the bubble was the main reason for the shock wave generated during the collapse of the bubble. Yang et al [33] found that the bubble collapse induces a re-entrant jet and a shock wave generated within the cavitation bubble refracting on the bubble inner wall. Tian et al [34] numerically investigated the jet and shock waves generated by near-wall bubble.…”

Investigations of the dynamical behaviors of a millimeter-scale cavitation bubble near the rigid wall

“…Numerical investigations of the near-wall bubble collapse mainly contain two parts. One studies bubble collapse started by its maximum volume and driven by high external pressure, and analyses the accompanying micro-jet phenomenon, pressure shock wave, and the secondary collapse with different  [19][20][21][22][23] . Another investigates bubble dynamics of its growth-collapse-rebound evolution process, starting from its minimum volume driven by inside high pressure.…”