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ISSN 打印: 1064-2285
ISSN 在线: 2162-6561

传热学

DOI: 10.1615/HeatTransRes.v33.i1-2.110
4 pages

Effect of Vortex Structures on the Boundary Layer of External Flow Around Bodies

I. I. Kovalev
Academic Scientific Complex "A. V. Luikov Heat and Mass Transfer Institute" National Academy of Sciences of Belarus, Minsk, Belarus

ABSTRACT

Numerical simulation of a slot-and-jet vortex generator and its effect on the wall boundary layer is considered. The existence of unsteady flow regime is shown, with initiation of unsteady votrices which separate from the jet and are carried by outer flow. When moving downstream, they deform the longitudinal velocity profile and reduce local skin friction. The considered slot-and-jet vortex generator is shown to be an effective way of overall friction reduction in its vicinity.


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