منابع مشابه
Numerische Simulation Auf Massiv Parallelen Rechnern Preprint-reihe Des Chemnitzer Sfb 393
In this paper we compare the performance, scalability, and robustness of diierent parallel algorithms for the numerical solution of nonlinear boundary value problems arising in the magnetic eld computation and in solid mechanics. These problems are discretized by using the nite element method with triangular meshes and piece-wise linear functions. The nonlinearity is handled by a nested Newton ...
متن کاملNumerische Simulation Auf Massiv Parallelen Rechnern Preprint-reihe Des Chemnitzer Sfb 393
The nite element method with anisotropic mesh grading for elliptic problems in domains with corners and edges Abstract. This paper is concerned with a speciic nite element strategy for solving elliptic boundary value problems in domains with corners and edges. First, the anisotropic singular behaviour of the solution is described. Then the nite element method with anisotropic, graded meshes and...
متن کاملNumerische Simulation Auf Massiv Parallelen Rechnern Preprint-reihe Des Chemnitzer Sfb 393
We study classical control problems like pole assignment, stabilization, linear quadratic control and H1 control from a numerical analysis point of view. We present several examples that show the di culties with classical approaches and suggest reformulations of the problems in a more general framework. We also discuss some new algorithmic approaches. AMS subject classi cation. 65F15, 93B40, 93...
متن کاملSonderforschungsbereich 393 Numerische Simulation Auf Massiv Parallelen Rechnern the Hierarchical Preconditioning on Locally Reened Unstructured Grids Preprint-reihe Des Chemnitzer Sfb 393
We present the implementation of two hierarchically preconditioned methods for the fast solution of mesh equations that approximate 2D-elliptic boundary value problems on unstructured quasi uniform triangulations constisting of N nodes and having locally reened regions. Based on the ctitious space approach the original problem can be adaptively embedded into an auxiliary one in which hanging no...
متن کاملSonderforschungsbereich 393 Numerische Simulation Auf Massiv Parallelen Rechnern Two Boundary Element Methods for the Clamped Plate Preprint-reihe Des Chemnitzer Sfb 393
In this paper we retail the approximation of the clamped plate problem by means of two boundary element methods. In both cases, the variational formulation is given on product of Sobolev spaces and we avoid the orthogonality to polynomials of degree one. The use of biorthogonal wavelets on these spaces leads to a well-conditioned sti ness matrix and reduces strongly the complexity thanks to a c...
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ژورنال
عنوان ژورنال: Astronomische Nachrichten
سال: 1898
ISSN: 0004-6337,1521-3994
DOI: 10.1002/asna.18981461308