Turbulence suppression in subsonic jets by high-frequency acoustic excitation

Vlasov, E. V.; Ginevskii, A. S.; Karavosov, R. K.; Makarenko, T. M.

doi:10.1007/bf02698746

Cited by 8 publications

(2 citation statements)

References 2 publications

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“…Conversely, a high-frequency acoustic input, at a frequency equal to Strouhal numbers from 1.5 to 5, causes vortex reduction in the jet mixing layer, resulting in attenuation of turbulent intermixing [18]. This behaviour was noted for a wide range of Reynolds number, from 10 2 to 10 6 .…”

Section: Introductionmentioning

confidence: 79%

Acoustically driven turbulence amplifier for pneumatic valves control

et al. 2008

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Section: Introductionmentioning

confidence: 79%

Acoustically driven turbulence amplifier for pneumatic valves control

et al. 2008

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“…During the 1960s and 70s researchers in the Russian Central Aerodynamical Institute (TSAGI) proposed and demonstrated a method of controlling turbulence in submerged jets by the application of an acoustic wave [47,48]. This process was subsequently investigated in more detail by many other researchers [12][13][14][15][16][17][18]49,20,22,23,50,51]; the underlying mechanism can be considered as a manifestation of stochastic resonance [52].…”

Section: Control Of Noise-driven Pendulum Oscillations By a Harmonic mentioning

confidence: 99%

Nonlinear systems with fast and slow motions. Changes in the probability distribution for fast motions under the influence of slower ones

Landa

McClintock

2013

Physics Reports

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The influence of slow processes on the probability distribution of fast random processes is investigated. By reviewing four examples we show that such influence is apparently of a universal character and that, in some cases, this universality is of multifractal form. As our examples we consider theoretically stochastic resonance, turbulent jets with acoustic forcing, and two problems studied experimentally by Shnol' on the influence of the Earth's slow rotation on the probability distribution for the velocities of model Brownian particles and on alpha decay. In the case of stochastic resonance, the slow process is a low frequency, harmonic, external force. In the case of turbulent jets, the slow process is acoustic forcing. In the models based on Shnol's experiments, the slow processes are inertial forces arising from the rotation of the Earth, both about its own axis and about the Sun. It is shown that all of these slow processes cause changes in the probability distributions for the velocities of fast processes interacting with them, and that these changes are similar in form.

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