naa a22 4500 510765963 CHVBK 20180411083156.0 cr unu---uuuuu 180411e20130601xx s 000 0 eng 10.1007/s11630-013-0619-9 doi (NATIONALLICENCE)springer-10.1007/s11630-013-0619-9 Interaction mechanism of double bubbles in hydrodynamic cavitation [Elektronische Daten] [Fengchao Li, Jun Cai, Xiulan Huai, Bin Liu] Bubble-bubble interaction is an important factor in cavitation bubble dynamics. 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. The bubble-bubble interaction between two bubbles with different radii is considered. 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 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. This phenomenon is more easily observed with the increase of the initial radius of the smaller bubble. In comparison with the single-bubble case, the oscillation of the bigger bubble is enhanced by the neighbor smaller bubble. 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. Although the increase of the center distance between two bubbles can weaken the mutual interaction, it has no significant influence on the enhancement trend. 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. 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. Science Press, Institute of Engineering Thermophysics, CAS and Springer-Verlag Berlin Heidelberg, 2013 Hydrodynamic cavitation nationallicence Double bubbles nationallicence Cavitation bubble dynamics nationallicence Li Fengchao Institute of Engineering Thermophysics, Chinese Academy of Sciences, 100190, Beijing, China aut Cai Jun Institute of Engineering Thermophysics, Chinese Academy of Sciences, 100190, Beijing, China aut Huai Xiulan Institute of Engineering Thermophysics, Chinese Academy of Sciences, 100190, Beijing, China aut Liu Bin Institute of Engineering Thermophysics, Chinese Academy of Sciences, 100190, Beijing, China aut Journal of Thermal Science SP Science Press 22/3(2013-06-01), 242-249 1003-2169 22:3<242 2013 22 11630 https://doi.org/10.1007/s11630-013-0619-9 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11630-013-0619-9 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Li Fengchao Institute of Engineering Thermophysics, Chinese Academy of Sciences, 100190, Beijing, China aut NATIONALLICENCE 700 1- Cai Jun Institute of Engineering Thermophysics, Chinese Academy of Sciences, 100190, Beijing, China aut NATIONALLICENCE 700 1- Huai Xiulan Institute of Engineering Thermophysics, Chinese Academy of Sciences, 100190, Beijing, China aut NATIONALLICENCE 700 1- Liu Bin Institute of Engineering Thermophysics, Chinese Academy of Sciences, 100190, Beijing, China aut NATIONALLICENCE 773 0- Journal of Thermal Science SP Science Press 22/3(2013-06-01), 242-249 1003-2169 22:3<242 2013 22 11630 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer