Theoretical model of ice nucleation induced by acoustic cavitation. Part 1: Pressure and temperature profiles around a single bubble
Theoretical model of ice nucleation induced by acoustic cavitation. Part 1: Pressure and temperature profiles around a single bubble
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DOI：
10.1016/j.ultsonch.2015.05.038
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发表时间：
2016-03-01
影响因子：
8.4
通讯作者：
Espitalier, F.
中科院分区：
文献类型：
--
作者：
Cogne, C.;Labouret, S.;Espitalier, F.
本文研究了超声波作用下液体中单个气泡的惯性空化现象。其目的是精确计算气泡壁处和气泡壁附近液体中的压力和温度。提出了两种不同的方法来模拟周围液体和气体之间的传热：简化方法（A）将液体作为理想热沉，严格方法（B）将液体作为正常导热介质。比较了上述模型对应的气泡半径、气体温度、界面温度和压力的时间分布，发现除气泡尺寸外，它们之间存在重要差异。给出了第二种模型（B）对应的液体中的压力和温度分布。这些配置文件是必要的预测周围的空化气泡发生的任何物理现象，与可能的应用程序声结晶。(C)2015 Elsevier B.V.版权所有。
This paper deals with the inertial cavitation of a single gas bubble in a liquid submitted to an ultrasonic wave. The aim was to calculate accurately the pressure and temperature at the bubble wall and in the liquid adjacent to the wall just before and just after the collapse. Two different approaches were proposed for modeling the heat transfer between the ambient liquid and the gas: the simplified approach (A) with liquid acting as perfect heat sink, the rigorous approach (B) with liquid acting as a normal heat conducting medium. The time profiles of the bubble radius, gas temperature, interface temperature and pressure corresponding to the above models were compared and important differences were observed excepted for the bubble size. The exact pressure and temperature distributions in the liquid corresponding to the second model (B) were also presented. These profiles are necessary for the prediction of any physical phenomena occurring around the cavitation bubble, with possible applications to sono-crystallization. (C) 2015 Elsevier B.V. All rights reserved.