Programs available for two-dimensional numerical modeling of the electromagnetic field
Václav Bezvoda, Karel Segeth (1992)
Acta Universitatis Carolinae. Mathematica et Physica
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Václav Bezvoda, Karel Segeth (1992)
Acta Universitatis Carolinae. Mathematica et Physica
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Václav Červ, Karel Segeth (1982)
Aplikace matematiky
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The development of iterative methods for solving linear algebraic equations has brought the question of when the employment of these methods is more advantageous than the use of the direct ones. In the paper, a comparison of the direct and iterative methods is attempted. The methods are applied to solving a certain class of boundary-value problems for elliptic partial differential equations which are used for the numerical modeling of electromagnetic fields in geophysics. The numerical...
Ioana Chiorean (2005)
Kragujevac Journal of Mathematics
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Emil Humhal (1976)
Aplikace matematiky
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Pierre Béal, Jonas Koko, Rachid Touzani (2002)
International Journal of Applied Mathematics and Computer Science
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We present a mesh adaptation method by node movement for two-dimensional linear elasticity problems with unilateral contact. The adaptation is based on a hierarchical estimator on finite element edges and the node displacement techniques use an analogy of the mesh topology with a spring network. We show, through numerical examples, the efficiency of the present adaptation method.
Jaroslav Haslinger, Pekka Neittaanmäki, Kimmo Salmenjoki (1992)
Applications of Mathematics
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We consider FE-grid optimization in elliptic unilateral boundary value problems. The criterion used in grid optimization is the total potential energy of the system. It is shown that minimization of this cost functional means a decrease of the discretization error or a better approximation of the unilateral boundary conditions. Design sensitivity analysis is given with respect to the movement of nodal points. Numerical results for the Dirichlet-Signorini problem for the Laplace equation...