Evolution of a turbulent cascade on the surface of liquid hydrogen under a change in the spectral characteristic of an exciting force |
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Authors: | L V Abdurakhimov M Yu Brazhnikov and A A Levchenko |
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Institution: | (1) Institute of Solid State Physics, Russian Academy of Sciences, Chernogolovka, Moscow region, 142431, Russia |
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Abstract: | The modification of the turbulent cascade in a system of capillary waves on the surface of liquid hydrogen under a change in the spectral width of exciting noise has been experimentally studied. The correlation function I ω of the deviations of the surface of liquid hydrogen from equilibrium under broadband excitation is a monotonically decreasing function of frequency. The distribution I ω in the inertial range is well described by the power function ω?m with the exponent m close to 17/6. In the presence of narrowband excitation, a chain of peaks appears on the cascade I ω; the positions of the peaks are described by a power function of frequency with the exponent m = 3.8 ± 0.1. |
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