Matrix Set ACOUST

ACOUST: Acoustic scattering

from the Harwell-Boeing Collection

Set ACOUST
Source:	David P. Young, Boeing Computer Services, Seattle, Washington
Discipline:	Dynamic analysis in structural engineering
Accession:	Spring 1984

These are four complex symmetric matrices that arise in modeling acoustic scattering phenomena. The fundamental operator is the Helmholtz equation with varying k and Dirichlet boundary conditions. All four problems come from a grid with 29 by 29 interior points. Some interior points are fixed as conductors. Five and nine-point difference formulae are used depending on the value of k at points in the grid.

Standard iterative methods, even with well-chosen preconditioners, perform poorly on these problems.

Matrices in this set:

YOUNG1C (complex symmetric indefinite, 841 by 841, 4089 entries)
YOUNG2C (complex symmetric indefinite, 841 by 841, 4089 entries)
YOUNG3C (complex symmetric indefinite, 841 by 841, 3988 entries)
YOUNG4C (complex symmetric indefinite, 841 by 841, 4089 entries)
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Last change in this page: Wed Sep 22 13:33:21 US/Eastern 2004 [Comments: ]