Mittal, Sanjay (2008) Global linear stability analysis of time-averaged flows International Journal for Numerical Methods in Fluids, 58 (1). pp. 111-118. ISSN 0271-2091
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Official URL: http://onlinelibrary.wiley.com/doi/10.1002/fld.171...
Related URL: http://dx.doi.org/10.1002/fld.1714
Abstract
The global linear stability analysis (LSA) of stationary/steady flows has been applied to various flows in the past and is fairly well understood. The LSA of time-averaged flows is explored in this paper. It is shown that the LSA of time-averaged flows can result in useful information regarding its stability. The method is applied to study flow past a cylinder at Reynolds number (Re) beyond the onset of vortex shedding. Compared with the direct numerical simulation, LSA of the Re=100 steady flow severely underpredicts the vortex shedding frequency. However, the LSA of the time-averaged flow results in the correct value of the non-dimensional frequency, St, of the associated instability.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to John Wiley and Sons, Inc. |
| Keywords: | Circular Cylinder; Linear Stability Analysis; Finite Element Method; Reynolds Averaged Navier-stokes Equations |
| ID Code: | 24782 |
| Deposited On: | 30 Nov 2010 09:14 |
| Last Modified: | 30 Nov 2010 09:14 |
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