報告題目:A high-order fictitious-domain method for linear convection-diffusion equation on time-varying domain
報 告 人:鄭偉英 研究員 中國科學院數學與系統科學研究院
報告時間:2020年8月13日 10:00-11:00
報告地點:騰訊會議 ID:806 101 710
會議鍊接:https://meeting.tencent.com/s/1CgmDlywU1CI
校内聯系人:陶詹晶 zjtao@jlu.edu.cn
報告摘要:
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.
報告人簡介:
鄭偉英,中國科學院數學與系統科學研究院研究員,1996年本科畢業于鄭州大學,2002年博士畢業于北京大學,2017年獲國家傑出青年科學基金資助,2019年任中科院數學與系統科學研究院“馮康首席研究員”。主要從事有限元方法的理論與應用研究,應用領域包括電磁和流體計算等。