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Tři způsoby interpolace na konečných prvcích
Šolín, Pavel ; Segeth, Karel
Interpolation on finite elements usually occurs in a Hilbert space setting, which means that interpolation techniques involving orthogonal projection are an alternative for the traditional Lagrange nodal interpolation schemes. In addition to the Lagrange interpolation, this paper discusses the global orthogonal projection and the projection-based interpolation. These techniques are compared from the point of view of quality, efficiency, sensitivity to input parameters and other aspects.
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A Damped Newton Iterative Algorithm
Segeth, Karel
The contribution is concerned with a Newton-like or damped Newton method for solving nonlinear algebraic systems that arise from the discretization of nonlinear partial differential equations. Under appropriate conditions, the algorithm presented converges globally and quadratically if the damping parameter involved is chosen in the way described.
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