Journal of Engineering Physics and Thermophysics
is a translation of Inzhenerno-fizicheskii Zhurnal,
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"A. V. Luikov Heat and Mass Transfer Institute"
of the National Academy of Sciences of Belarus
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EFFECT OF THE MODE OF FLOW IN THE INITIAL BOUNDARY LAYER
ON THE TURBULENCE ATTENUATION EFFECT IN A JET EXPOSED
TO ACOUSTIC IRRADIATION
E. V. Vlasov , A. S. Ginevskii , and T. M. Makarenko
UDC 532.525.2:534.2
Based on an analysis of experimental data on high-frequency acoustic
excitation of turbulent jets, we investigate the effect of the mode
of flow in the boundary layer of the outlet section of the nozzle on
realization of the turbulence attenuation effect. It is claimed that
high-frequency acoustic excitation of jets leads to a decrease in
turbulent fluctuations on the axis of the initial stretch of the jet
and to reduction of noise in both initially laminar and initially
turbulent boundary layers at the nozzle outlet.
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