| MATRIXSET | |
|---|---|
| Source: | David P. Young, Boeing Computer Services, Seattle, WA |
| Discipline: | Dynamic analyses in structural engineering |
| Accession: | Spring 1984 |
These are 4 complex symmetric matrices that arise in modelling the acoustic
scattering phenomenon. 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
held fixed as conductors. Five and nine-point difference formulae are
used depending on the value of k at points in the grid.
YOUNG1C : Complex matrix from aerospace research,
841 x 841, 4089 nonzeroes
YOUNG2C : Complex matrix from aerospace research,
841 x 841, 4089 nonzeroes
YOUNG3C : Complex matrix from aerospace research,
841 x 841, 3988 nonzeroes
YOUNG4C : Complex matrix from aerospace research,
841 x 841, 4089 nonzeroes