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Local Nonsymmetric Smoothers
许学军教授,中科院计算数学研究所研究员、中国计算数学学会秘书长
2018-01-01 12:13  华东师范大学

计算数学学术报告

报告题目: Local Nonsymmetric Smoothers
报告人: 许学军
中科院计算数学研究所研究员、中国计算数学学会秘书长
时间: 2010年11月10日(星期三)下午: 3:00 – 4:00
地点: 数学楼126室

报告简介:
In this talk, we present some local multilevel algorithms for solving linear systems arising from adaptive finite element approximations of nonsymmetric and indefinite elliptic boundary value problems. Two types of local smoothers are constructed. It is shown that the local multilevel methods are optimal, which means that the convergence rates of the local multilevel methods are independent of mesh sizes and mesh levels. Numerical experiments are reported to confirm our theory. From our numerical experiments, we can observe that our local multilevel methods work very well for certain convection-diffusion problems. This talk is based on a joint work with Huangxin Chen.