学术报告

【2025年11月22日15:10】兰州大学土木工程与力学学院建院20周年大会暨学科高质量发展论坛特邀报告


  • 报告题目:Simulations of Multicomponent Phase Change: A Sharp-Interface VOF Framework
  • 人:倪明玖 教授
  • 报告时间:2025年11月22日(周六)日15:10-15:50
  • 报告地点:逸夫科学馆报告厅
  • 人:许春晓 教授
报告人简介

  倪明玖,中国科学院大学讲席教授,教育部“长江学者”特聘教授。西安交通大学工学博士,1999.4-2007.3年间在京都大学和UCLA学习工作。围绕磁约束托卡马克聚变堆关键部件的研发及电磁冶金材料的研制,长期开展液态金属流体力学研究,主要研究方向:磁流体力学(MHD)、两相流、MHD湍流、核聚变工程等。是国务院学位委员会力学学科评议组委员,《力学学报》副主编、FED中国区副主编,力学学会常务理事,流体力学专委会副主任委员,大科学装置CRAFT科技委员会委员,获力学学会自然科学一等奖,先后主持科技部磁约束聚变堆重点研发计划项目,基金委重大仪器专项(自由申请类)项目、杰出青年基金项目等。

报告摘要

  In many natural and industrial applications, solid-liquid-gas phase change processes, such as multi-component solidification and evaporation, play a crucial role. These processes involve complex interactions between flow dynamics, heat transfer, and concentration fields, which influence the flow patterns and interface morphology. In this study, we present a novel 3D sharp interface method developed to model these phenomena in the presence of complex geometries. The contact line motion is captured through a sharp, conservative approach, ensuring strong coupling between flow, temperature, and concentration fields at the interfaces. The method combines the volume-of-fluid (VOF) technique and the embedded boundary method (EBM) to represent sharp interfaces, with geometric reconstruction used to define the distinct phases and enforce accurate jump conditions across the interfaces. The accuracy and robustness of the proposed method are rigorously validated through a comprehensive set of benchmark test cases.