A Domain Decomposition Method with Lagrange Multiplier Based on the Pointwise Matching Condition

A Domain Decomposition Method with Lagrange Multiplier Based on the Pointwise Matching Condition

Year:    2009

International Journal of Numerical Analysis and Modeling, Vol. 6 (2009), Iss. 1 : pp. 147–160

Abstract

In this paper, we are concerned with a non-overlapping domain decomposition method with nonmatching grids. In this method, a new pointwise matching condition is used to define weak continuity of approximate solutions on the interface. The main merit of the new method is that numerical integrations can be avoided when calculating interface matrices. We derive an almost optimal error estimate of the resulting approximate solutions for two kinds of applicable situations. Some numerical experiments confirm the theoretical result.

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Journal Article Details

Publisher Name:    Global Science Press

Language:    English

DOI:    https://doi.org/2009-IJNAM-760

International Journal of Numerical Analysis and Modeling, Vol. 6 (2009), Iss. 1 : pp. 147–160

Published online:    2009-01

AMS Subject Headings:    Global Science Press

Copyright:    COPYRIGHT: © Global Science Press

Pages:    14

Keywords:    Domain decomposition nonmatching grids pointwise matching error estimate.