Dynamic behaviors of cavitation bubbles near biomimetic surfaces: A numerical study

Shi, Hongbo; Zhang, Hang; Geng, Linlin; Qu, Sen; Wang, Xikun; Nikrityuk, Petr A.

doi:10.1016/j.oceaneng.2023.116628

Cited by 15 publications

(3 citation statements)

References 49 publications

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“…Cavitation can also be initiated for other tasks, such as emulsification, sonophoresis, and homogenization [14][15][16][17]. Jet flows formed during a cavitation bubble collapse can reach a velocity of 80 m/s and can be used for microfluidic pumping and to create vortices for vigorous short-term mixing in microfluidic devices [18][19][20][21][22][23][24].…”

Section: Introductionmentioning

confidence: 99%

Numerical Modeling of the Behavior of Bubble Clusters in Cavitation Processes

Pavlenko

2024

Energies

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To study the behavior of a bubble clusters in cavitation devices, a numerical study of the dynamics of bubbles in a compressible liquid was performed, taking into account interfacial heat and mass transfer. The influence of regime and system parameters on the intensity of cavitation processes is considered. Physical and chemical transformations during the cavitation treatment of liquids are caused not only by the action of shock waves and emitted pressure pulses but also by extreme thermal effects. At the stage of extreme compression of the bubble, the vapor inside the bubble and the liquid in its vicinity transform into the state of a supercritical fluid. The presented model analyzes the nature of microflows in the interbubble space and carries out a quantitative calculation of the local values of the parameters of the velocity and pressure fields.

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Section: Introductionmentioning

confidence: 99%

Numerical Modeling of the Behavior of Bubble Clusters in Cavitation Processes

Pavlenko

2024

Energies

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“…Cavitation is a complex fluid dynamic phenomenon involving multi-phase variation, turbulence, and compressibility [1,2]. At a certain temperature, when the local pressure inside a fluid falls below the saturated vapor pressure at that temperature, the microbubbles formed within the fluid are called cavitation bubbles [3]. The process from the inception to the development and ultimately the explosion of these cavitation bubbles is known as cavitation [4] in which an enormous amount of energy is generated and released, leading to corrosion and rusting of machine surfaces.…”

Section: Introductionmentioning

confidence: 99%

“…(2) The influence of different structural parameters on the cavitation performance is investigated by numerical simulation. (3) The cavitation mechanism for shear-induced cavitation bubble generation is obtained by analyzing the diagrams of pressure and velocity clouds.…”

Section: Introductionmentioning

confidence: 99%

Research on the Effect of Structural Parameters on Cavitation Performance of Shear Hydrodynamic Cavitation Generator

Lyu,

Tang,

Zhou

et al. 2024

Applied Sciences

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The method of cavitation is increasingly applied in water environmental protection. Based on the numerical simulation method, a study on the structural parameters of the shear-type hydrodynamic cavitation generators for wastewater treatment is proceeded. The internal flow field is described by employing the mixed multiphase flow model and the Zwart cavitation model. Experiments were conducted by applying the wastewater from a dyeing factory as the medium. The degradation rate of COD in water characterizes the cavitation performance of the hydrodynamic cavitation generator, and the rationality of the numerical simulation approach is validated. The findings indicate that different structural parameters have a great influence on the cavitation performance. The appropriate number of tooth rows creates a flow field with a greater vapor and velocity than the other parameters. The number of teeth in a single row, the outer diameter of the hydrodynamic cavitation generator and the tooth bevel angle also affect the cavitation performance to some extent, and there is an optimal value. The study provides a reference for the applicability of a numerical simulation of the flow field inside the hydrodynamic cavitation generator and the structural optimization of the rotary hydrodynamic cavitation generator.

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Investigation of the impact load characteristics of micro-jet induced by cavitation collapse on rigid wall surface

Shen,

Han,

et al. 2024

Chemical Engineering Journal

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Dynamic behaviors of cavitation bubbles near biomimetic surfaces: A numerical study

Cited by 15 publications

References 49 publications

Numerical Modeling of the Behavior of Bubble Clusters in Cavitation Processes

Numerical Modeling of the Behavior of Bubble Clusters in Cavitation Processes

Research on the Effect of Structural Parameters on Cavitation Performance of Shear Hydrodynamic Cavitation Generator

Investigation of the impact load characteristics of micro-jet induced by cavitation collapse on rigid wall surface

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