Technical Physics Letters
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The influence of noises with different spectra on viscous incompressible fluid flows
Zhilenko D. Yu.
1, Krivonosova O.E.
1
1Institute of Mechanics, Lomonosov Moscow State University, Moscow, Russia
Email: jilenko@imec.msu.ru, olga@imec.msu.ru
The results of an experimental study of the effects of noises on flows in a rotating spherical layer are presented. Noise is introduced into the flow in the form of random fluctuations of the inner sphere rotational rate relative to a time constant mean value. The flow velocity was measured with a laser Doppler anemometer. It was found that the noises of the equal amplitude, but with different spectra cause the generation of mean flows of different intensity. It is shown that the increase in the average velocities under the action of the noise is larger for the stable flows compared to unstable ones Keywords: noise, flows with rotation, spherical Couette flow.
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