Microscopic and Macroscopic Modelling of Multi-Phase Flows

本研究从理论和实验两个方面， 随时间变化的压力场中的气泡尺寸振荡。 以前的分析将扩展到包括以下因素的影响： 气体溶解性对于高溶解性 气体或低溶解度气体，但在大幅度 压力波动 气泡动力学的结果来自 这一微观观点将被用来得出合适的 气泡中压力波的宏观（平均）方程 液体和雾。 这项研究将提高预测能力， 可能发生相变的两相流， 反应堆热工水力系统和意外泄漏。 它也应该用于空化，医疗应用 超声波和超声波清洗。

This research is a theoretical and experimental study of bubble size oscillations in time varying pressure fields. Previous analysis will be extended to include the influence of gas solubility which becomes important for highly soluble gases or for low solubility gases but at large amplitude pressure fluctuations. The results for bubble dynamics from this microscopic view point will be used to derive suitable macroscopic (averaged) equations for pressure waves in bubbly liquids and fogs. The research should lead to improved capability for predicting two phase flows with possible phase change such as occurs in reactor thermal hydraulic systems and in accidental releases. It should also be of use for cavitation, medical applications of ultrasound, and ultrasonic cleaning.