Numerical modeling of unidirectional stratified flow with and without phase change

Y. F. Yap; J. C. Ghai; K. C. Toh; T. N. Wong; Y. C. Lam

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Numerical modeling of unidirectional stratified flow with and without phase change

机译：有无相变的单向分层流的数值模拟

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This article presents a mass correction procedure for unidirectional stratified flow of two fluids (or two phases of the same fluid) using the level-set method. A localized mass correction term is introduced to ensure mass conservation at every axial cross-section. The mass correction term is based on the mass flowrates. Phase change is captured using the mass correction term. For demonstration purposes, this article assumes that both phases are at their respective saturated states and the heat addition results in phase change at the saturation temperature. Results for various combinations of density, viscosity and mass flowrate ratios are presented. The proposed procedure is validated using available fully developed exact solutions for unidirectional stratified flow. The evolutions of the interface in the developing region are also captured and compares well with "exact" solutions.

机译：本文介绍了一种使用液位设置方法对两种流体（或同一流体的两相）的单向分层流进行质量校正的方法。引入了局部质量校正项，以确保每个轴向横截面处的质量守恒。质量校正项基于质量流量。使用质量校正项捕获相变。出于演示目的，本文假设两个相都处于各自的饱和状态，并且热量的添加会导致饱和温度下的相变。给出了密度，粘度和质量流量比的各种组合的结果。拟议的程序已使用针对单向分层流的完整开发的可用精确解决方案进行了验证。还捕获了开发区域中界面的演变，并将其与“精确”解决方案进行了很好的比较。

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《International Journal of Heat and Mass Transfer》 |2005年第4期|p.477-486|共10页
作者
Y. F. Yap; J. C. Ghai; K. C. Toh; T. N. Wong; Y. C. Lam;
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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种 eng
中图分类热力工程理论;热学;
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Numerical modeling of unidirectional stratified flow with and without phase change

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