| タイトル | Projection techniques for iterative solution of A(bar x) equals (bar b) with successive right-hand sides |
| 本文（外部サイト） | http://hdl.handle.net/2060/19940020363 |
| 著者（英） | Fischer, Paul F. |
| 著者所属（英） | Institute for Computer Applications in Science and Engineering |
| 発行日 | 1993-12-01 |
| 言語 | eng |
| 内容記述 | Two projection techniques for computing approximate solutions to linear systems of the form A(bar x)(sup n) = (bar b)(sup n), for a sequence n = 1, 2, ..., e.g., such as arises from time discretization of a partial differential equation, are presented. The inexpensive approximate solutions can be used as initial guesses for iterative solution of the system, resulting in significantly reduced computational expense. Examples of two- and three-dimensional incompressible Navier-Stokes calculations are presented in which x represents the pressure, and A is a discrete Poisson operator. In flows containing significant dynamic activity, these projection techniques lead to as much as a two-fold reduction in solution time. |
| NASA分類 | NUMERICAL ANALYSIS |
| レポートNO | 94N24836
NASA-CR-191571
NAS 1.26:191571
ICASE-93-90
AD-A275744 |
| 権利 | No Copyright |
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