This test matrix is from transient stability analysis of Navier-Stokes solvers. The order of the test matrix is 23560. The eigenvalues and eigenvectors are associated with small perturbation analysis of a finite difference representation of the Navier-Stokes equations for flows over airfoils. Such eigensystem information is central to stability analysis of Navier-Stokes solvers, for determining the modal behavior of fluid in a fluid-structure interaction problem and for development of reduced order models based on variational principals for Navier-Stokes solvers. A representative eigenvalue constellation is reported in the reference, where the Lanczos procedure with no rebiorthogonalization is used. The number of Lanczos iterations required for convergence was between 1000 to 1200.

A representative eigenvalue constellation is reported in the reference, where the Lanczos procedure with no rebiorthogonalization is used. The number of Lanczos iterations required for convergence was between 1000 to 1200.

Matrices in this set:

AF23560 (real unsymmetric, 23560 by 23560, 484256 entries)