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

时间：2025年5月16日（周五）下午14:30—15:30

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.

主讲人简介：Zafar Hayat Khan教授是一名世界级科学家，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。