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

多孔介质中的液气相变化在各种工程应用中起着至关重要的作用。尽管过去已经取得了重大进展，但经过多年的广泛研究，相变现象的一些因素仍未得到很好的理解。目前需要进一步研究的领域之一是毛细管驱动流动的液-气界面不稳定性。界面不稳定性会通过改变相变过程导致换热设备的性能异常和机械损伤。本课题旨在通过实验和数值研究研究多孔介质中液-气相变过程中的热-液不稳定性。该项目的主要目标之一是扩展先前开发的数学模型，以便能够提出设计改进建议，以消除或纠正性能异常。

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.