Автор |
Lin, J.‐T. |
Автор |
Panchev, S. |
Автор |
Cermak, J. E. |
Дата выпуска |
1969 |
dc.description |
For a stationary process in the wave‐number range investigated (the buoyancy subrange of stably stratified flow) under the assumption of local homogeneity of the flow, two governing spectral equations derived from equations of motion and energy are solved by means of a generalized eddy‐viscosity approximation. Asymptotic solutions are obtained in the buoyancy subrange, where the local production and local dissipation of turbulence energy are negligible when compared with the inertial transfer and vertical heat‐flux terms when the flow conditions satisfy the frequency criterion [(g/T0)(d‐Γ‐/dz)]1/2≪[N/ε(g/T0)2]1/2. The power law for the velocity and temperature spectra is not universal but varies with the flow conditions in the way ϕ(k) ∼ k<sup>n</sup> and ϕ<sub>TT</sub>(k) ∼ k<sup>m</sup>, where −11/5 ≥ n ≥ −3 and −1 ≥ m ≥ −7/5. |
Формат |
application.pdf |
Копирайт |
Copyright 1969 by the American Geophysical Union. |
Название |
A Modified Hypothesis on Turbulence Spectra in the Buoyancy Subrange of Stably Stratified Shear Flow |
Тип |
article |
DOI |
10.1029/RS004i012p01333 |
Electronic ISSN |
1944-799X |
Print ISSN |
0048-6604 |
Журнал |
Radio Science |
Том |
4 |
Первая страница |
1333 |
Последняя страница |
1337 |
Выпуск |
12 |
Библиографическая ссылка |
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Библиографическая ссылка |
Gisina, F. A., The effect of mean velocity and temperature gradients on the spectral characteristics of turbulence, Engl. Transl., Izv. Acad. Sci., USSR, Atmos. Oceanic Phys., 28, 487–491, 1966. |
Библиографическая ссылка |
Lin, J.‐T., (1969), Turbulence spectra in the buoyancy subrange of thermally stratified shear flows, Ph.D. dissertation,Fluid Mechanics Program, Colorado State University,Fort Collins. |
Библиографическая ссылка |
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Библиографическая ссылка |
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Библиографическая ссылка |
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Библиографическая ссылка |
Myrup, L. O., Atmospheric measurements of the buoyant subrange of turbulence, J. Atmos. Sci., 25, 1160–1164, 1968. |
Библиографическая ссылка |
Panchev, S., Random Functions and Turbulence, Hydrometeorology Press, Leningrad, in Russian, Engl. Transl. published by Pergamon Press, New York, 1967. |
Библиографическая ссылка |
Phillips, O. M., On the Bolgiano and Lumley‐Shur theories of the buoyancy subrange, Atmospheric Turbulence and Radio‐Wave Propagation121–128, Proc. Int. Colloq., Doklady Akademia Nauk USSR, Moscow, 1965. |
Библиографическая ссылка |
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Библиографическая ссылка |
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