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

多孔介质中液-汽界面的热水力不稳定性

• 批准号: 261208-2007
• 负责人: Kaya, Tarik
• 金额: $ 1.31万
• 依托单位: Carleton University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2008
• 资助国家: 加拿大
• 起止时间: 2008-01-01 至 2009-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=394907
• 关键词: Thermo; hydraulic; instability; liquid; vapour

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.

多孔介质中的液-气相变在工程应用中起着重要的作用。虽然在过去已经取得了重大进展，相变现象的一些元素没有得到很好的理解，尽管多年的广泛研究。目前需要进一步研究的领域之一是毛细驱动流的液-汽界面不稳定性。界面不稳定性通过改变相变过程，可导致传热设备的性能异常和机械损坏。拟议的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，以消除或纠正性能异常。