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http://hdl.handle.net/1942/2981
Title: | Hydrodynamic fluctuations in the Kolmogorov flow: Linear regime | Authors: | BENA, Ioana Baras, F. Mansour, M.M. |
Issue Date: | 1999 | Publisher: | AMERICAN PHYSICAL SOC | Source: | PHYSICAL REVIEW E, 59(5). p. 5503-5510 | Abstract: | The Landau-Lifshitz fluctuating hydrodynamics is used to study the statistical properties of the linearized Kolmogorov flow. The relative simplicity of this flow allows a detailed analysis of the fluctuation spectrum from near equilibrium regime up to the vicinity of the first convective instability threshold. It is shown that in the long time limit the flow behaves as an incompressible fluid, regardless of the value of the Reynolds number. This is not the case for the short time behavior where the incompressibility assumption leads in general to a wrong form of the static correlation functions, except near the instability threshold. The theoretical predictions are confirmed by numerical simulations of the full nonlinear fluctuating hydrodynamic equations. [S1063-651X(99)09905-5]. | Notes: | Limburgs Univ Ctr, B-3590 Diepenbeek, Belgium. Free Univ Brussels, Ctr Nonlinear Phenomena & Complex Syst, B-1050 Brussels, Belgium.Bena, I, Limburgs Univ Ctr, Univ Campus, B-3590 Diepenbeek, Belgium. | Document URI: | http://hdl.handle.net/1942/2981 | ISI #: | 000080382900011 | Type: | Journal Contribution | Validations: | ecoom 2000 |
Appears in Collections: | Non-affiliated authors |
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