9783528080976 - robust multigrid methods (notes on numerical fluid mechanics): proceedings of the fourth gamm-seminar, kiel, january 22 to 24,1988: 23 di hackbusch, wolfgang (18 risultati)
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Editore: Vieweg Verlag, Friedr, & Sohn Verlagsgesellschaft mbH, 1989
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Condizione: New. Editor(s): Hackbusch, Wolfgang. Series: Notes on Numerical Fluid Mechanics and Multidisciplinary Design. BIC Classification: TGMF. Dimension: 244 x 170. Weight in Grams: 506. . 1989. Paperback. . . . .
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Condizione: New. Editor(s): Hackbusch, Wolfgang. Series: Notes on Numerical Fluid Mechanics and Multidisciplinary Design. BIC Classification: TGMF. Dimension: 244 x 170. Weight in Grams: 506. . 1989. Paperback. . . . . Books ship from the US and Ireland.
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Editore: Vieweg+Teubner Verlag, Vieweg+Teubner Verlag, 1989
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Taschenbuch. Condizione: Neu. Druck auf Anfrage Neuware - Printed after ordering - In full multigrid methods for elliptic difference equations one works on a sequence of meshes where a number of pre- and/or postsmoothing steps are performed on each level. As is well known these methods can converge very fast on problems with a s…mooth solution and a regular mesh, but the rate of convergence can be severely degraded for problems with unisotropy or discontinuous coefficients unless some form of robust smoother is used. Also problems can arise with the increasingly coarser meshes because for some types of discretization methods, coercivity may be lost on coarse meshes and on massively parallel computers the computation cost of transporting information between computer processors devoted to work on various levels of the mesh can dominate the whole computing time. For discussions about some of these problems, see (11). Here we propose a method that uses only two levels of meshes, the fine and the coarse level, respec tively, and where the corrector on the coarse level is equal to a new type of preconditioner which uses an algebraic substructuring of the stiffness matrix. It is based on the block matrix tridiagonal structure one gets when the domain is subdivided into strips. This block-tridiagonal form is used to compute an approximate factorization whereby the Schur complements which arise in the recursive factorization are approximated in an indirect way, i. e.
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Robust Multi-Grid Methods / Notes on Numerical Fluid Mechanics, Volume 23
Robust Multi-Grid Methods / Notes on Numerical Fluid Mechanics, Volume 23
Lingua: Tedesco
Editore: Robust Multi-Grid Methods / Notes on Numerical Fluid Mechanics, Volume 23, 1989
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Da: BUCHSERVICE / ANTIQUARIAT Lars Lutzer, Wahlstedt, GermaniaBUCHSERVICE / ANTIQUARIAT Lars Lutzer
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Softcover. Condizione: gut. Robust Multi-Grid Methods / Notes on Numerical Fluid Mechanics, Volume 23 In deutscher Sprache. pages.
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Editore: Vieweg+Teubner, Vieweg+Teubner Verlag Jan 1989, 1989
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Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -In full multigrid methods for elliptic difference equations one works on a sequence of meshes where a number of pre- and/or postsmoothing steps are performed on each level. As is well known these methods can converge very fast on p…roblems with a smooth solution and a regular mesh, but the rate of convergence can be severely degraded for problems with unisotropy or discontinuous coefficients unless some form of robust smoother is used. Also problems can arise with the increasingly coarser meshes because for some types of discretization methods, coercivity may be lost on coarse meshes and on massively parallel computers the computation cost of transporting information between computer processors devoted to work on various levels of the mesh can dominate the whole computing time. For discussions about some of these problems, see (11). Here we propose a method that uses only two levels of meshes, the fine and the coarse level, respec tively, and where the corrector on the coarse level is equal to a new type of preconditioner which uses an algebraic substructuring of the stiffness matrix. It is based on the block matrix tridiagonal structure one gets when the domain is subdivided into strips. This block-tridiagonal form is used to compute an approximate factorization whereby the Schur complements which arise in the recursive factorization are approximated in an indirect way, i. e. 244 pp. Englisch.
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Editore: Vieweg Verlag, Friedr, & Sohn Verlagsgesellschaft mbH, 1989
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Condizione: New. Print on Demand pp. 256 67:B&W 6.69 x 9.61 in or 244 x 170 mm (Pinched Crown) Perfect Bound on White w/Gloss Lam.
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Editore: Vieweg Verlag, Friedr, & Sohn Verlagsgesellschaft mbH, 1989
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Condizione: New. PRINT ON DEMAND pp. 256.
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Kartoniert / Broschiert. Condizione: New. Dieser Artikel ist ein Print on Demand Artikel und wird nach Ihrer Bestellung fuer Sie gedruckt. A robust preconditioner based on algebraic substructuring and two-level grids.- Adaptive multigrid Solution of the convection-diffusion equation on the DIRMU multiprocessor.- Finite volume mu…ltigrid Solutions of the two-dimensional incompressible Navier-Sto.
Lingua: Tedesco
Editore: Vieweg+Teubner Verlag, Vieweg+Teubner Verlag Jan 1989, 1989
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Da: buchversandmimpf2000, Emtmannsberg, BAYE, Germaniabuchversandmimpf2000
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Taschenbuch. Condizione: Neu. This item is printed on demand - Print on Demand Titel. Neuware -In full multigrid methods for elliptic difference equations one works on a sequence of meshes where a number of pre- and/or postsmoothing steps are performed on each level. As is well known these methods can converge very fast on probl…ems with a smooth solution and a regular mesh, but the rate of convergence can be severely degraded for problems with unisotropy or discontinuous coefficients unless some form of robust smoother is used. Also problems can arise with the increasingly coarser meshes because for some types of discretization methods, coercivity may be lost on coarse meshes and on massively parallel computers the computation cost of transporting information between computer processors devoted to work on various levels of the mesh can dominate the whole computing time. For discussions about some of these problems, see (11). Here we propose a method that uses only two levels of meshes, the fine and the coarse level, respec tively, and where the corrector on the coarse level is equal to a new type of preconditioner which uses an algebraic substructuring of the stiffness matrix. It is based on the block matrix tridiagonal structure one gets when the domain is subdivided into strips. This block-tridiagonal form is used to compute an approximate factorization whereby the Schur complements which arise in the recursive factorization are approximated in an indirect way, i. e.Vieweg+Teubner Verlag, Abraham-Lincoln-Straße 46, 65189 Wiesbaden 256 pp. Deutsch.
