Residual Cutting Method for Elliptic Boundary Value Problems:
β Scribed by Atsuhiro Tamura; Kazuo Kikuchi; Tadayasu Takahashi
- Publisher
- Elsevier Science
- Year
- 1997
- Tongue
- English
- Weight
- 461 KB
- Volume
- 137
- Category
- Article
- ISSN
- 0021-9991
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β¦ Synopsis
A new, efficient, and highly accurate numerical method which achieves the residual reduction with the aid of residual equations and the method of least squares is proposed for boundary value problems of elliptic partial differential equations. Neumann, Dirichlet, and mixed boundary value problems of threedimensional Poisson's equation for pressure in a curved duct flow and a cascade flow have been solved. Numerical results exhibit the effectiveness of the method by a high convergence rate and a high degree of robustness. The method is expected to be an effective numerical solution method applicable to a wide range of partial differential equations with various boundary conditions.
π SIMILAR VOLUMES
By using an artiΓΏcial boundary an iteration method is designed to solve some elliptic boundary value problems with singularities. At each step of the iteration the standard ΓΏnite element method is used to solve the problems in a domain without singularities. It is shown that the iteration method is
The singularities near the crack tips of homogeneous materials are monotone of type r Ξ± and r Ξ± log Ξ΄ r (depending on the boundary conditions along nonsmooth domains). However, the singularities around the interfacial cracks of the heterogeneous bimaterials are oscillatory of type r Ξ± sin(Ξ΅ log r ).
## Abstract Recently BabusΜkaβOh introduced the method of auxiliary mapping (MAM) which efficiently handles elliptic boundary value problems containing singularities. In this paper, a special weighted residue method, the Weighted RitzβGalerkin Method (WRGM), is investigated by introducing special w