一个新的核态沸腾汽泡动力学模型  

A NEW BUBBLE DYNAMICS MODEL FOR NUCLEATED BOILING

作　　者：李骥[1] 张正芳[1] 刘登瀛[1] 

机构地区：[1]中国科学院工程热物理所,北京100080

出　　处：《工程热物理学报》2002年第1期71-74,共4页Journal of Engineering Thermophysics

基　　金：中国科学院95基础研究重大基金资助项目(No.KJ951-B1-704)

摘　　要：本文在经典汽泡动力学理论基础上，提出了描述汽泡生长过程的综合界面模型．本模型的核心在于汽泡内部的热力学过程的详细分析及汽液界面的传热、传质过程的详细描述．并对汽泡生长过程进行了模拟计算，给出了动力学控制阶段的时间范围．本模型对汽泡生长、汽膜发展的理论分析及数值模拟提供了良好的基础．In this paper on the basis of the classical bubble dynamics, a new model is brought forward for the bubble growth in a nucleation boiling system-the comprehensive interface model. The thermodynamic analysis for the status variation in a bubble and the consideration of the heat and mass transfer on the interface of the bubble is the core of the model when boiling takes place. This model reveals the pressure and temperature variation in the process of bubble growth first time and provides a reasonable solution to numerically simulate the bubble growth or the development of vapor film. The temperature variation of the heating surface and the properties of the liquid govern the time length of the early bubble growth stage.

关 键 词：汽泡动力学 核态沸腾 数学模型 动力学模型 工质 流态 

分 类 号：TK124[动力工程及工程热物理—工程热物理] O552.6[动力工程及工程热物理—热能工程]