Title
Spectral Galerkin discretization for hydrodynamic stability problems
Abstract
A spectral Galerkin discretization for calculating the eigenvalues of the Orr-Sommerfeld equation is presented. The matrices of the resulting generalized eigenvalue problem are sparse. A convergence analysis of the method is presented which indicates that a) no spurious eigenvalues occur and b) reliable results can only be expected under the assumption of scale resolution, i.e., that Re/p 2 is small; here Re is the Reynolds number and p is the spectral order. Numerical experiments support that the assumption of scale resolution is necessary in order to obtain reliable results. Exponential convergence of the method is shown theoretically and observed numerically.
Year
DOI
Venue
2000
10.1007/s006070070014
Computing
Keywords
DocType
Volume
AMS Subject Classifications: 76E05,65N25,65N35.,Key Words: Orr-Sommerfeld equation,hydrodynamic stability,eigenvalue problem,spectral method.
Journal
65
Issue
ISSN
Citations 
2
0010-485X
1
PageRank 
References 
Authors
0.43
0
3
Name
Order
Citations
PageRank
J. M. Melenk1746.52
N. P. Kirchner210.77
C. Schwab39919.07