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Domain Decomposition and Optimized Schwarz Methods for the Dual-porosity-conduit System
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Reporter:
Wenjing Yan, Professor, School of Mathematics and Statistics, Xi'an Jiaotong University
Inviter:
Chensong Zhang, Associate Professor
Subject:
Domain Decomposition and Optimized Schwarz Methods for the Dual-porosity-conduit System
Time and place:
19:30-21:00 November 16 (Wednesday) , Tencent Meeting ID: 124-107-886 Meeting Password: 2022
Abstract:

In this work, we propose and analyze domain decomposition methods to decouple the large system arisen from the discretization of dual-porosity-Stokes model. Robin boundary conditions are used to decouple the coupling conditions on the interface. Then, Robin-Robin domain decomposition method is established based on the two decoupled sub-problems. Convergence analysis is demonstrated and a geometric convergence order is obtained. Optimized Schwarz method is proposed for the dual-porosity-Stokes model and optimized Robin parameters are obtained to improve the convergence of proposed algorithms. Numerical experiments are presented to illustrate and validate the accuracy and applicability of proposed algorithms. 


报告人简介:晏文璟,西安交通大学数学与统计学院教授、博士生导师。2008年于西安交通大学计算数学专业获得博士学位,随后在西安交通大学动力工程及工程热物理流动站从事博士后研究工作,2014年1月至2015年1月访问美国布朗大学应用数学系,2019年5月至6月在北京应用物理与计算数学研究所担任客座研究员。主要研究方向为多物场耦合的高性能算法、形状最优控制以及油藏模拟等。主持国家自然科学基金项目、陕西省自然科学基础科学研究计划、教育部博士学科点专项科研基金、中国博士后科学基金、军工科技攻关项目等科研项目,作为骨干成员参与科技部国家重点研发计划项目、国家自然科学基金重大研究计划、国家自然科学基金重点项目等课题。2013年3月以第一完成人荣获陕西高等学校科学技术奖一等奖,在国际知名期刊上发表SCI论文30多篇。