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International Journal of Fluid Mechanics Research
ESCI SJR: 0.206 SNIP: 0.446 CiteScore™: 0.5

ISSN 印刷: 2152-5102
ISSN オンライン: 2152-5110

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International Journal of Fluid Mechanics Research

DOI: 10.1615/InterJFluidMechRes.v27.i1.70
pages 82-98

Spectrum of Turbulent Fluctuations of the Sea-Water Refraction Index

V. V. Nikishov
Institute of Hydromechanics of National Academy of Sciences of Ukraine, Kyiv, Ukraine
V. I. Nikishov
Institute of Hydromechanics of National Academy of Sciences of Ukraine, 8/4, Zhelyabov St., Kyiv, 03057, Ukraine

要約

The behavior of the spectrum of fluctuations En of refraction index n in turbulent sea water when the fluctuations of n are controlled by fluctuations T' of the temperature and S' of the salinity is analyzed. The spectrum of En is found for homogeneous and isotropic turbulence as a function of the rate of dissipation (equalization) of temperature and salinity fluctuations which, together with the dissipation rate of the energy of turbulence, control the statistical behavior of fluctuations of n. These rates were parametrized by employing the gradient hypothesis. It was found that, depending on the contributions of temperature and salinity fluctuations to fluctuations of n, one may observe domains of anomal behavior which may include appearance of local extrema.


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