Å.I.Nikiforovich Asymptotic features of boundary layer equations with taking into account buoyancy forces |
Applied hydromechanics, Vol. 9 (81) ¹ 2-3, (2007) |
| The development of a temperature stratified boundary layer (SBL) over a flat plate is investigated. In this paper using the asymptotic analysis of Navier-Stokes equations the following conclusions were obtained: -buoyancy forces in a SBL result in the appearance of the new type of space-time scales which explicitly depends on the value of these forces; -longitudinal vortices, as an essential flow structural feature, were shown to originate from the interaction of two vorticity sources (due to viscous and buoyancy forces). Available buoyancy forces were proved to result in essentially 3D nature of boundary layers. Obtained results can be used for optimal ways of SBL control using basic parameters. |
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| TEXT LANGUAGE: Russian |