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AuthorFunaro, Daniele. author
TitleSpectral Elements for Transport-Dominated Equations [electronic resource] / by Daniele Funaro
ImprintBerlin, Heidelberg : Springer Berlin Heidelberg : Imprint: Springer, 1997
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Descript X, 215 p. online resource


In the last few years there has been a growing interest in the development of numerical techniques appropriate for the approximation of differential model problems presenting multiscale solutions. This is the case, for instance, with functions displaying a smooth behavior, except in certain regions where sudden and sharp variations are localized. Typical examples are internal or boundary layers. When the number of degrees of freedom in the discretization process is not sufficient to ensure a fine resolution of the layers, some stabilization procedures are needed to avoid unpleasant oscillatory effects, without adding too much artificial viscosity to the scheme. In the field of finite elements, the streamline diffusion method, the Galerkin least-squares method, the bubยญ ble function approach, and other recent similar techniques provide excellent treatments of transport equations of elliptic type with small diffusive terms, referred to in fluid dynamics as advection-diffusion (or convection-diffusion) equations. Goals This book is an attempt to guide the reader in the construction of a computaยญ tional code based on the spectral collocation method, using algebraic polynoยญ mials. The main topic is the approximation of elliptic type boundary-value parยญ tial differential equations in 2-D, with special attention to transport-diffusion equations, where the second-order diffusive terms are strongly dominated by the first-order advective terms. Applications will be considered especially in the case where nonlinear systems of partial differential equations can be reยญ duced to a sequence of transport-diffusion equations


1. The Poisson equation in the square -- 2. Steady transport-diffusion equations -- 3. Other kinds of boundary conditions -- 4. The spectral element method -- 5. Time discretization -- 6. Extensions -- References

Mathematics Algebra Numerical analysis Thermodynamics Complexity Computational Mathematics Numerical Analysis Thermodynamics Algebra Complexity


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