Name: Textbook Multigrid Efficiency for Leading Edge Stagnation (en Inglés)
SKU: 59701120
Price: 36.88 USD
Availability: InStock
Author: Diskin, Boris ; Nasa Technical Reports Server (Ntrs) ; Et Al
ISBN: 9781287268994

portada Textbook Multigrid Efficiency for Leading Edge Stagnation (en Inglés)

Textbook Multigrid Efficiency for Leading Edge Stagnation (en Inglés)

Formato

Libro Físico

Autor

Nasa Technical Reports Server (Ntrs)

Boris Diskin

Editorial

Bibliogov

Idioma

Inglés

N° páginas

Encuadernación

Tapa Blanda

Dimensiones

24.6x18.9x0.3 cm

Peso

0.11 kg.

ISBN13

9781287268994

Categorías

Política y gobierno

Textbook Multigrid Efficiency for Leading Edge Stagnation (en Inglés)

Nasa Technical Reports Server (Ntrs) (Autor) · Boris Diskin (Autor) · Bibliogov · Tapa Blanda

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Reseña del libro "Textbook Multigrid Efficiency for Leading Edge Stagnation (en Inglés)"

A multigrid solver is defined as having textbook multigrid efficiency (TME) if the solutions to the governing system of equations are attained in a computational work which is a small (less than 10) multiple of the operation count in evaluating the discrete residuals. TME in solving the incompressible inviscid fluid equations is demonstrated for leading-edge stagnation flows. The contributions of this paper include (1) a special formulation of the boundary conditions near stagnation allowing convergence of the Newton iterations on coarse grids, (2) the boundary relaxation technique to facilitate relaxation and residual restriction near the boundaries, (3) a modified relaxation scheme to prevent initial error amplification, and (4) new general analysis techniques for multigrid solvers. Convergence of algebraic errors below the level of discretization errors is attained by a full multigrid (FMG) solver with one full approximation scheme (FAS) cycle per grid. Asymptotic convergence rates of the FAS cycles for the full system of flow equations are very fast, approaching those for scalar elliptic equations.