Open Access

ABSTRACT

Mesh Quality Improvement for Unstructured Quadrilateral Multigrid Analysis

Y. Wada¹, T. Hayashi², M. Kikuchi³

1 Tokyo University of Science, Suwa, Chino, Nagano, Japan
2 Graduation School of Tokyo University of Science, Noda, Chiba, Japan
3 Tokyo University of Science, Noda, Chiba, Japan

The International Conference on Computational & Experimental Engineering and Sciences 2008, 8(4), 127-132. https://doi.org/10.3970/icces.2008.008.127

Abstract

Due to more complex and severe design, more effective and faster finite element analyses are demanded. One of the most effective analysis ways is the combination of adaptive analysis and multigrid iterative solver, because an adaptive analysis requires several meshes with different node densities and multigrid solver utilizes such meshes to accelerate its computation. However, convergence of multigrid solver is largely affected by initial shape of each element. An effective mesh improvement method is proposed here. It is the combination of mesh coarsening and refinement. A good mesh can be obtained by the method to be applied to an initial mesh, and better convergence is obtained by the improved initial mesh.

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