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Prikladnaya Mekhanika i Tekhnicheskaya Fizika, 2000, Volume 41, Issue 6, Pages 60–67
(Mi pmtf3005)
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This article is cited in 2 scientific papers (total in 2 papers)
Localized coherent structures in the boundary layer
I. G. Dodonov, V. A. Zharov, Yu. I. Khlopkov Moscow Physicotechnical Institute, Zhukovskii, 140160
Abstract:
A Blasius laminar boundary layer and a steady turbulent boundary layer on a flat plate in an incompressible fluid are considered. The spectral characteristics of the Tollmien–Schlichting (TS) and Squire waves are numerically determined in a wide range of Reynolds numbers. Based on the spectral characteristics, relations determining the three–wave resonance of TS waves are studied. It is shown that the three–wave resonance is responsible for the appearance of a continuous low–frequency spectrum in the laminar region of the boundary layer. The spectral characteristics allow one to obtain quantities that enter the equations of dynamics of localized perturbations. By analogy with the laminar boundary layer, the three–wave resonance of TS waves in a turbulent boundary layer is considered.
Received: 07.07.1999 Accepted: 30.09.1999
Citation:
I. G. Dodonov, V. A. Zharov, Yu. I. Khlopkov, “Localized coherent structures in the boundary layer”, Prikl. Mekh. Tekh. Fiz., 41:6 (2000), 60–67; J. Appl. Mech. Tech. Phys., 41:6 (2000), 1012–1019
Linking options:
https://www.mathnet.ru/eng/pmtf3005 https://www.mathnet.ru/eng/pmtf/v41/i6/p60
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