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Author:

Xu, Fei (Xu, Fei.) | Huang, Qiumei (Huang, Qiumei.) (Scholars:黄秋梅) | Jiang, Kun (Jiang, Kun.) | Ma, Hongkun (Ma, Hongkun.)

Indexed by:

EI Scopus SCIE

Abstract:

This paper presents a new type of local and parallel multigrid method to solve semilinear elliptic equations. The proposed method does not directly solve the semilinear elliptic equations on each layer of the multigrid mesh sequence, but transforms the semilinear elliptic equations into several linear elliptic equations on the multigrid mesh sequence and some low-dimensional semilinear elliptic equations on the coarsest mesh. Furthermore, the local and parallel strategy is used to solve the involved linear elliptic equations. Since solving large-scale semilinear elliptic equations in fine space, which can be fairly time-consuming, is avoided, the proposed local and parallel multigrid scheme will significantly improve the solving efficiency for the semilinear elliptic equations. Besides, compared with the existing multigrid methods which need the bounded second order derivatives of the nonlinear term, the proposed method only requires the Lipschitz continuation property of the nonlinear term. We make a rigorous theoretical analysis of the presented local and parallel multigrid scheme, and propose some numerical experiments to support the theory. (C) 2020 IMACS. Published by Elsevier B.V. All rights reserved.

Keyword:

Local and parallel Multigrid method Semilinear elliptic equations Multilevel correction method

Author Community:

  • [ 1 ] [Xu, Fei]Beijing Univ Technol, Fac Sci, Beijing Inst Sci & Engn Comp, Beijing 100124, Peoples R China
  • [ 2 ] [Huang, Qiumei]Beijing Univ Technol, Fac Sci, Beijing Inst Sci & Engn Comp, Beijing 100124, Peoples R China
  • [ 3 ] [Jiang, Kun]Beijing Univ Technol, Fac Sci, Beijing Inst Sci & Engn Comp, Beijing 100124, Peoples R China
  • [ 4 ] [Ma, Hongkun]Zhuhai Huafa Investment Holdings Grp Co Ltd, Hengqin 519000, Peoples R China
  • [ 5 ] [Ma, Hongkun]Sun Yat Sen Univ, Business Sch, Guangzhou 510275, Guangdong, Peoples R China

Reprint Author's Address:

  • [Ma, Hongkun]Zhuhai Huafa Investment Holdings Grp Co Ltd, Hengqin 519000, Peoples R China

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Source :

APPLIED NUMERICAL MATHEMATICS

ISSN: 0168-9274

Year: 2021

Volume: 162

Page: 20-34

2 . 8 0 0

JCR@2022

ESI Discipline: MATHEMATICS;

ESI HC Threshold:31

JCR Journal Grade:1

Cited Count:

WoS CC Cited Count: 5

SCOPUS Cited Count: 5

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 9

Affiliated Colleges:

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