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Thermophysics and Aeromechanics

2008 year, number 1

Effect of periodic blowing/suction through sequentially located annular slots on the turbulent boundary layer on a body of revolution

A.V. Boiko and V.I. Kornilov
Khristianovich Institute of Theoretical and Applied Mechanics SB RAS, Novosibirsk, Russia
Pages: 11–27

Abstract

The effect of local periodic forcing in the form of blowing/suction through sequentially located annular slots on the features of the turbulent boundary layer formed on an axisymmetric body of revolution in an incompressible flow is studied experimentally. The Reynolds number based on the momentum thickness of the boundary layer ahead of the annular slot is 1362. The dimensionless amplitude of the forcing signal A0 is set to be 0.4. The frequency of the forcing signal in the law-of-the-wall units is f+