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This paper presents a new approach to investigate the bubbles movements and  their interaction in the boiling heat transfer proess. Based on the study of  the wake flow of single rising bubble, the interaction of bubble pairs, such  as interaction and coalescenceboiling, is experimentally and numerically  simulated. The validity of the numerical simulation was verified by the  experimental pictures captured by high-speed CCD camera. The wakes of two  bubbles was revealed by obtatined velocity field, and the interaction  between two bubbles was analyzed in fluid dynamics. The simulations shows  that the coalescence of bubbles may happen when one bubble enters the wake  influence area of the main bubble. The velocity vector field shows that wake  flow of the bubble is the major influencing factor determining the  interaction between bubbles.

Investigation of bubbles interaction and coalescence boiling in the boiling heat transfer process