Thermo-hydraulic instability of liquid-vapour interface in porous media

多孔介质中的液-汽相变在广泛的工程应用中起着至关重要的作用。虽然过去已经取得了重大进展，但尽管进行了多年的广泛研究，但对相变现象的一些元素还没有很好地理解。目前需要进一步研究的领域之一是毛细管驱动流动的液-汽界面不稳定性。界面不稳定性通过改变相变过程，导致换热设备性能异常和机械损伤。该研究项目旨在通过实验和数值研究来研究多孔介质中液-汽相变过程中遇到的热工水力不稳定性。该项目的主要目标之一是扩展以前开发的数学模型，以便能够提出设计改进建议，以消除或补救性能异常。

The liquid-vapour phase change in porous media plays a vital role in a wide variety of engineering applications. Although significant progress has been made in the past, some elements of phase-change phenomena are not well understood despite many years of extensive research. One of the areas where there is currently a need for further research is liquid-vapour interface instabilities of the capillary-driven flows. The interface instabilities can lead to performance anomalies and mechanical damage of heat transfer equipment by altering the phase-change process. The proposed research project aims to study thermo-hydraulic instabilities encountered during the liquid-vapour phase change process in porous media through experimental and numerical investigation. One of the main goals of the project is to expand a previously developed mathematical model to be able to suggest design improvements to eliminate or remedy the performance anomalies.