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The Mixed Finite Element Analysis for Porous Media using Domain Decomposition Method  

Lee, Kyung-Jae (한양대학교 건설환경공학과)
Tak, Moon-Ho (한양대학교 건설환경공학과)
Kang, Yoon-Sik (한양대학교 건설환경공학과)
Park, Tae-Hyo (한양대학교 건설환경공학과)
Publication Information
Journal of the Computational Structural Engineering Institute of Korea / v.23, no.4, 2010 , pp. 369-378 More about this Journal
Abstract
The mixed finite element analysis is the most widely used method for saturated porous media. Generally, in this method, direct method and iterative method are proposed to obtain unknown variable, however, the iterative method is recommended because the method provide numerical stability and accuracy under the material properties for solid and fluid are different. In this paper, we introduce staggered method which has strong numerical stability, and FETI(Finite Element Tearing and Interconnecting) which is one of decomposition methods are applied into the method in order to obtain numerical efficiency. In which, Lagrange Multipliers and conjugated gradient method to solve decomposed domain are proposed, and then, the proposed method is verified numerical efficiency by point to point MPI(Message Passing Interface) library.
Keywords
porous media; staggered method; decomposition method; mixed finite element method;
Citations & Related Records
Times Cited By KSCI : 6  (Citation Analysis)
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