报告题目:A high-order fictitious-domain method for linear convection-diffusion equation on time-varying domain
报 告 人:郑伟英 研究员 中国科学院数学与系统科学研究院
报告时间:2020年8月13日 10:00-11:00
报告地点:腾讯会议 ID:806 101 710
会议链接:https://meeting.tencent.com/s/1CgmDlywU1CI
校内联系人:陶詹晶 zjtao@jlu.edu.cn
报告摘要:
Solving PDEs on time-varying domains has many applications in computational fluid dynamics. Generally, one has to discretize the PDE and track the variation (movement + deformation) of the domain simultaneously. We propose a high-order numerical method for solving linear convection-diffusion equations in 2D based on fictitious domain and Eulerian meshes. For smooth solutions, we proved high-order error estimates for the method by taking account of surface-tracking errors, time-discretization errors, and space-discretization errors. Numerical experiments show up to fourth-order convergence of the method for relatively large deformation of the domain.
报告人简介:
郑伟英,中国科学院数学与系统科学研究院研究员,1996年本科毕业于郑州大学,2002年博士毕业于北京大学,2017年获国家杰出青年科学基金资助,2019年任中科院数学与系统科学研究院“冯康首席研究员”。主要从事有限元方法的理论与应用研究,应用领域包括电磁和流体计算等。