Mixed and hybrid finite element methods
Mixed and hybrid finite element methods
Implicit application of polynomial filters in a k-step Arnoldi method
SIAM Journal on Matrix Analysis and Applications
Finite element vibration analysis of fluid-solid systems without spurious modes
SIAM Journal on Numerical Analysis
On restarting the Arnoldi method for large nonsymmetric eigenvalue problems
Mathematics of Computation
A Krylov--Schur Algorithm for Large Eigenproblems
SIAM Journal on Matrix Analysis and Applications
SIAM Journal on Numerical Analysis
Finite Element Analysis of a Quadratic Eigenvalue Problem Arising in Dissipative Acoustics
SIAM Journal on Numerical Analysis
The Quadratic Eigenvalue Problem
SIAM Review
Addendum to "A Krylov--Schur Algorithm for Large Eigenproblems"
SIAM Journal on Matrix Analysis and Applications
Normwise Scaling of Second Order Polynomial Matrices
SIAM Journal on Matrix Analysis and Applications
SOAR: A Second-order Arnoldi Method for the Solution of the Quadratic Eigenvalue Problem
SIAM Journal on Matrix Analysis and Applications
Iterative projection methods for computing relevant energy states of a quantum dot
Journal of Computational Physics
Hi-index | 31.45 |
We develop and analyze efficient methods for computing damped vibration modes of an acoustic fluid confined in a cavity with absorbing walls capable of dissipating acoustic energy. The discretization in terms of pressure nodal finite elements gives rise to a rational eigenvalue problem. Numerical evidence shows that there are no spurious eigenmodes for such discretization and also confirms that the discretization based on nodal pressures is much more efficient than that based on Raviart-Thomas finite elements for the displacement field. The trimmed linearization method is used to linearize the associated rational eigenvalue problem into a generalized eigenvalue problem (GEP) of the form Ax=@lBx. For solving the GEP we apply Arnoldi algorithm to two different types of single matrices B^-^1A and AB^-^1. Numerical accuracy shows that the application of Arnoldi on AB^-^1 is better than that on B^-^1A.