Seminars on Numerical Algorithms, Analyses, and Applications: A high order moving boundary treatment for convection-diffusion equations

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:蒋琰(中国科学技术大学)
:2023-04-21 16:00
:厦门大学海韵园实验楼105报告厅

报告人:蒋琰(中国科学技术大学)

 间:2023421下午1600

 点:厦门大学海韵园实验楼105报告厅

内容摘要:

In this talk, we will introduce a boundary treatment for solving general convection-diffusion equations on time-varying domain on a fixed Cartesian mesh. This method can achieve high order accuracy, and has a unified form for pure convection, convection-dominated, convection-diffusion, diffusion-dominated and pure diffusion cases. We also extend the boundary treatment to the compressible Navier-Stokes equations. Numerical tests demonstrate that our boundary treatment is high order accurate for problems with smooth solutions and also performs well for problems involving interactions between viscous shocks and moving rigid bodies.

人简介

蒋琰,中国科学技术大学特任研究员。2015 年于中国科学技术大学取得博士学位,2015年至2018年在美国密歇根州立大学从事博士后工作。2018年至今在中国科学技术大学数学学院担任特任研究员、博士生导师。主要研究方向为高精度偏微分方程数值方法的理论与设计,包括加权本质无震荡(WENO)格式,间断伽略金有限元(DG)方法,转秩方向线方法(MOLT),逆Lax-WendroffILW)类边界处理方法等,并将其用于流体模型,电磁学模型,生物模型等问题的数值模拟。现已在 SISC JCP 等高水平期刊发表论文二十余篇。

 

联系人:熊涛