应数学与计算科学学院、广西应用数学中心(桂林电子科技大学)及广西高校数据分析与计算重点实验室邀请,南宁师范大学Zafar Hayat Khan教授将于2025年5月16日来校讲学,欢迎全校师生踊跃参加。具体安排如下:
报告题目:Understanding thermal flow and phase instabilities in geothermal systems
主讲人:Zafar Hayat Khan教授
报告时间:2025年5月16日(周五)下午14:30—15:30
报告地点:花江校区慧谷4号楼3楼310会议室
报告摘要:This study explores the instability of the liquid–vapour interface in a geothermal system bounded by isothermal surfaces. Through a two-dimensional linear stability analysis of the isothermal base state, it is found that the Rayleigh–Taylor mechanism predominantly drives the onset of instability. A conditional expression for the critical modified Rayleigh number is derived, accounting for various heat transport mechanisms. The results highlight that spontaneous instability arises primarily due to two simplifications: neglecting thermal advection and assuming the phase change front is equidistant from the liquid and vapour boundaries.
报告人简介:Zafar Hayat Khan教授,世界级科学家,多次入选“全球前2%科学家榜单”和“中国高被引学者年度榜单”,四川千人计划获奖人。研究领域涉及Geothermal system, Liquid–vapour interface, Rayleigh-Taylor instability, Linear stability analysis, Isothermal boundaries, Critical Rayleigh number, Thermal advection等方面。