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

Hu, Jinsen; Lu, Xuan; Liu, Yifan; Duan, Jingfei; Liu, Yuhang; Yu, Jiaxin; Zheng, Xiaoxiao; Zhang, Yuning; Zhang, Yuning

doi:10.1016/j.ultsonch.2023.106576

Cited by 23 publications

(9 citation statements)

References 45 publications

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“…The size of the grid cells within the refined region is managed by adjusting the number of nodes along the four green lines. According to our previous work [19], the accuracy and efficiency of the simulations demonstrate a great balance at a minimum grid size of 2.4 µm. The rate of grid expansion outside the refined region is set at a factor of 1.25.…”

Section: Numerical Implementationmentioning

confidence: 58%

“…The surfaces of both particles are treated as walls, and the outlet is set as a boundary condition that will not reflect the wave. The numerical schemes employed and the solvers adopted for the coefficient matrix are consistent with those from our previous research [19].…”

Section: Numerical Implementationmentioning

confidence: 94%

“…Conversely, when unequal-sized particles are present, the bubble jet is more likely to be directed toward the large particle. Hu et al [19] elucidated the underlying cause of bubble fragmentation by conducting numerical simulations. Their findings indicate that the increasing and converging high-pressure liquid surrounding the middle of the bubble is the primary factor resulting in bubble fragmentation.…”

Section: Introductionmentioning

confidence: 99%

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Numerical Investigations on the Jet Dynamics during Cavitation Bubble Collapsing between Dual Particles

Wang,

Feng,

et al. 2024

Symmetry

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The jet dynamics during cavitation bubble collapsing between unequal-sized dual particles are investigated utilizing a numerical model that combines the finite volume approach alongside the volume of fluid approach. The model incorporates the compressibility of the two-phase fluid and accounts for mass and heat transfer between two phases. The computational model utilizes an axisymmetric model, where the axis of symmetry is defined as the line that connects the centers of the particles and the bubble. A comprehensive analysis is presented on the influence of the particle radius and bubble–particle distance on the jet behavior. Furthermore, the variations of surface pressure on the particles induced by jet impingement are quantitatively analyzed. Four distinct jet behaviors are categorized, depending on the formation mechanism, as well as the number and the direction of the jets. For case 1, the bubble produces a single jet directed toward a small particle; for case 2, the bubble fragments produces double jets receding from each other; for case 3, the bubble produces double jets approaching each other; and for case 4, the bubble produces a single jet directed toward a large particle. The pressure perturbations induced by jet impingement upon the particles exceed those caused by shock wave impacts. The larger the bubble volume at the moment of jet formation, the longer the duration of the pressure variation caused by the jet impinging on the particles.

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Section: Numerical Implementationmentioning

confidence: 58%

Section: Numerical Implementationmentioning

confidence: 94%

Section: Introductionmentioning

confidence: 99%

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Numerical Investigations on the Jet Dynamics during Cavitation Bubble Collapsing between Dual Particles

Wang,

Feng,

et al. 2024

Symmetry

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“…In the case of multiple particles, the formation of a neck between particles can lead to some interesting jets. Figure 8 shows the temporal development of bubble shape during the first phase simulated using OpenFOAM with the solutions of the equations for bubble dynamics near particles and boundary conditions given in Hu et al (2023). In frame (c), the neck forms with a maximum volume.…”

Section: Neck Shrinkagementioning

confidence: 99%

A review of bubble collapse near particles

Yu,

Luo,

et al. 2024

International Journal of Fluid Engineering

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Bubble–particle interactions are of great importance in cavitation bubble dynamics, especially in the case of silt-laden flow. In this paper, a review of the physical mechanisms involved in bubble collapse near particles is presented, with an emphasis on the jet and shock wave phenomenon. First of all, the collapse of a bubble occurring close to a flat wall is introduced to provide a basis for understanding cavitation behavior near boundaries. Then, with the aim of revealing the physical processes that occur during bubble collapse near particles, this is followed by a detailed discussion, with plentiful examples, of the collapse process (the inception, growth, collapse, rebound, and final disappearance of the bubble) and the formation and behavior of jets (the inception jet, counter jet, and double jets) and shock waves (incident, reflected, jet-induced, and jet-split shock waves).

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“…It is a difficult problem that affects the performance of fluid machinery, such as propellers, turbines, and water pumps [2] . The development of cavitation is unsteady, and its collapse exhibits instantaneous, strongly nonlinear, and phase-changing characteristics, forming strong shock waves [3] , [4] in the flow field and releasing large amounts of energy. A series of adverse consequences, such as pressure fluctuations, cavitation erosion, and noise, can occur [5] , [6] , [7] .…”

Section: Introductionmentioning

confidence: 99%

Control mechanisms of different bionic structures for hydrofoil cavitation

Yang,

Li,

Xiao

et al. 2024

Ultrasonics Sonochemistry

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

Cited by 23 publications

References 45 publications

Numerical Investigations on the Jet Dynamics during Cavitation Bubble Collapsing between Dual Particles

Numerical Investigations on the Jet Dynamics during Cavitation Bubble Collapsing between Dual Particles

A review of bubble collapse near particles

Control mechanisms of different bionic structures for hydrofoil cavitation

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