Seminars on Numerical Algebra, Optimization and Data Sciences:On preconditioned iteration methods for saddle point problems from eddy current models

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:任志茹(中央财经大学)
:2022-10-28 10:00
:腾讯会议ID:197833213(无密码)

报告人:任志茹(中央财经大学)

时  间:1028日上午10:00

地  点:腾讯会议ID197833213(无密码)

内容摘要:

For the saddle point problem arising from the finite element discretization of the hybrid formulation of the time-harmonic eddy current problem, we present several different splitting preconditioners which are based on splittings of the saddle point matrix. We analyze the convergences of the corresponding splitting iteration methods, and discuss the computing procedures which is much easier to implement than the existing preconditioners when they are used to accelerate the convergence rate of Krylov subspace methods such as GMRES. Numerical examples are given to show the effectiveness of our proposed preconditioners.

人简介:

任志茹,中央财经大学统计与数学学院副教授。她于20116月在中科院数学与系统科学研究院计算数学所获得理学博士学位,20117-20146月在中科院数学与系统科学研究院进行博士后研究,20146月至今在中央财经大学工作,并于20189-20199月在美国加州大学伯克利分校数学系进行学术访问。目前,她主要从事数值代数与科学计算方面的研究,已在国内外著名学术刊物上发表论文20余篇,主持和参与国家自然科学基金项目2项。在2016年获得应用数值代数奖,2020年获得山西省自然科学二等奖(排名第三)。

 

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