Investigation of cavitation bubble collapse near rigid boundary by lattice Boltzmann method

The interaction between cavitation bubbles and solid surfaces is an important issue when investigating the mechanism of collapsing cavitation bubbles. The property of a solid surface has a great effect on the inception, development and collapse of the bubbles. In this work, we aim to investigate the effect of wettability on collapsing cavitation bubbles using the multi-relaxation-time lattice Boltzmann model. First, the pseudopotential multi-relaxation-time lattice Boltzmann is improved by involving the piecewise linear equation of state and the improved forcing scheme modified by Li et al. The improved pseudopotential model is verified by the Laplace law. Next, the fluid-solid interaction in the model is employed to adjust the wettability of the solid surface. Moreover, the simulation of the collapse of the cavitation bubble near the solid surface is compared by the experiment results. Finally, the simulation of the collapsing cavitation bubbles near the solid surface with different wettability is also investigated. We find that the numerical results of the collapsing bubble are in good agreement with the experimental results. The simulation results show that the hydrophobicity of the solid surface can accelerate the cavitation bubble collapse. The hydrophilicity of the solid surface has little effect on the collapsing bubbles. geometric characteristics of the surface have great effects on cavitation erosion intensity at standoff distances around or exceeding the optimum. Belova et al. explored the controlled effect of ultrasonic cavitation on hydrophobic/hydrophilic surfaces [11]. They developed a selective control scheme of ultrasonic cavitation on metal surfaces with different hydrophobicities. Their findings from the experiments showed that cavitation prefers to dominate on hydrophobic surfaces due to the low nucleation barrier. Due to the limitations of the experiment, the microcosmic mechanism of interaction between the cavitation bubble and the solid surface was not discussed in their work.The lattice Boltzmann method (LBM), as a mesoscopic approach based on the kinetic Boltzmann equation, has been rapidly developed in recent years [12]. LBM has been employed in research on the interaction between the cavitation and surface of solid surface materials due to its convenience in multiphase and fluid-solid surface modeling [13]. In References [13], Ezzatneshan discussed the effects of wettability on cavitation inception using LBM. The study showed that the pseudopotential LBM was robust and efficient for predicting cavitation phenomena with surface wettability effects considered. It was also accurate enough for cavitation flow under different conditions. However, the above researchers' works do not involve the stage of the collapsing cavitation bubble, which is critical for the interaction between cavitation and the solid surface.The challenge of the simulation of the collapsing cavitation bubble near the solid surface is the stability of the lattice Boltzmann (LB) model. For the pseudopotential multiphase mo...

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“…The periodic boundary condition is applied in two directions of the boundary. The density field is initialized as [18]:…”

Section: Laplace Law and The Contact Anglementioning

confidence: 99%

Effect of Wettability on Collapsing Cavitation Bubble near Solid Surface Studied by Multi-Relaxation-Time Lattice Boltzmann Model

Zhu

Shan

et al. 2018

Applied Sciences

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“…, this choice for the viscosity makes formally the LBGK scheme a second order method for incompressible flows [13]. Equation (1), termed the LBE [14] with BGK approximation or LBGK model, is usually solved in the following two steps:…”

Section: Lattice Boltzmann Modelmentioning

confidence: 99%

“…Zhou and Shan [12] simulated the acoustic cavitation of spherical bubble and compared with the predictions of Keller equation to original Shan-Chen pseudopotential model. Recently, Shan and his group used modified Shan-Chen model found the second collapse in the rigid boundary damage of cavitation bubble and the impeding effect between two collapses successfully [13]. However, it should be mentioned that the report about cavitation bubble in square flume solid boundaries by LBM numerical simulation are fewer.…”

Section: Introductionmentioning

confidence: 99%

Simulation on Cavitation Bubble Collapsing with Lattice Boltzmann Method

Yang¹,

Shen²,

Zheng³

et al. 2015

JAMP

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We consider a pressure (density) in a square flume solid boundaries and no-slip format condition formulation are introduced to investigate cavitation bubble for the two-dimensional lattice Boltzmann method (LBM). Using the coupling Carnahan-Starling equation of state (C-S EOS) and exact difference method (EDM) based on modified Shan-Chen model, the whole process of bubble collapse was observed complete and visual with equilibrium distribution function and rebound format. This paper analyzes the bubble form evolution, collapse time and dynamic character under the two dimensional press fields.

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“…Unfortunately, the above researches do not involve the interaction between bubble and solid wall. Until, the pseudopotential model was introduced into the researches on the mechanism investigations of cavitation bubble collapse near solid wall by Shan et al [20] [21]. However, these previous works involve just planar wall.…”

Section: Introductionmentioning

confidence: 99%

Modeling for Collapsing Cavitation Bubble near Rough Solid Wall by Mulit-Relaxation-Time Pseudopotential Lattice Boltzmann Model

Shan¹,

Zhu²,

Yao³

et al. 2017

JAMP

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Cavitation bubble collapse near rough solid wall is modeled by the multi-relaxation-time (MRT) pseudopotential lattice Boltzmann (LB) model. The modified forcing scheme, which can achieve LB model's thermodynamic consistency by tuning a parameter related with the particle interaction range, is adopted to achieve desired stability and density ratio. The bubble collapse near rough solid wall was simulated by the improved MRT pseudopotential LB model. The mechanism of bubble collapse is studied by investigating the bubble profiles, pressure field and velocity field evolution. The eroding effects of collapsing bubble are analyzed in details. It is found that the process and the effect of the interaction between bubble collapse and rough solid wall are affected seriously by the geometry of solid boundary. At the same time, it demonstrates that the MRT pseudopotential LB model is a potential tool for the investigation of the interaction mechanism between the collapsing bubble and complex geometry boundary.

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Investigation of cavitation bubble collapse near rigid boundary by lattice Boltzmann method

Cited by 45 publications

References 16 publications

Effect of Wettability on Collapsing Cavitation Bubble near Solid Surface Studied by Multi-Relaxation-Time Lattice Boltzmann Model

Effect of Wettability on Collapsing Cavitation Bubble near Solid Surface Studied by Multi-Relaxation-Time Lattice Boltzmann Model

Simulation on Cavitation Bubble Collapsing with Lattice Boltzmann Method

Modeling for Collapsing Cavitation Bubble near Rough Solid Wall by Mulit-Relaxation-Time Pseudopotential Lattice Boltzmann Model

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