Augmentation of natural convective heat transfer by acoustic cavitation. Numerical simulation on enhancement of natural convection heat transfer by acoustic cavitation in a square enclosure. Cavitation Enhanced Heat Transfer in Microchannels. International Journal of Heat and Mass Transfer, 50(13–14), pp. Hydrodynamic cavitation and boiling in refrigerant (R-123) flow inside microchannels. Experimental research on antiscale and scale removal by ultrasonic cavitation. Cavitation-Induced Reactions in High-Pressure Carbon Dioxide. Wastewater treatment: a novel energy efficient hydrodynamic cavitational technique. Journal of Environmental Management, 85(4), pp. Application of cavitational reactors for water disinfection: Current status and path forward. Biochemical Engineering Journal, 35(3), pp.357–364. Water disinfection using the novel approach of ozone and a liquid whistle reactor. Transient, High-Pressure Solidification Associated with Cavitation in Water. The significant enhancement effect due to the interaction of multi-bubbles should be paid more attention because it can be used to reinforce the cavitation intensity for various potential applications in future.Įdward B. On the one hand, the interaction between two bubbles with different radii can suppress the growth of the smaller bubble on the other hand, it also can enhance the growth of the bigger one at the same time. Although the increase of the center distance between two bubbles can weaken the mutual interaction, it has no significant influence on the enhancement trend.
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Especially, the pressure pulse of the bigger bubble rises intensely when the sizes of two bubbles approach, and a series of peak values for different initial radii are acquired when the initial radius ratio of two bubbles is in the range of 0.9∼1.0. In comparison with the single-bubble case, the oscillation of the bigger bubble is enhanced by the neighbor smaller bubble. This phenomenon is more easily observed with the increase of the initial radius of the smaller bubble. The simulation results indicate that, when considering the role of the neighbor smaller bubble, the oscillation of the bigger bubble gradually exhibits a lag in comparison with the single-bubble case, and the extent of the lag becomes much more obvious as time goes by. We have shown the different dynamic behaviors between double cavitation bubbles and a single bubble by solving two coupling nonlinear equations using the Runge-Kutta fourth order method with adaptive step size control. The bubble-bubble interaction between two bubbles with different radii is considered. In this paper, the dynamic behaviors of double cavitation bubbles driven by varying pressure field downstream of an orifice plate in hydrodynamic cavitation reactor are examined. Bubble-bubble interaction is an important factor in cavitation bubble dynamics.
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