Scaling exponents in nonisotropic convective turbulence

A dynamical theory for the structure functions in convective turbulence at high Rayleigh numbers is presented. A range of scales is identified in which buoyancy forces dominate and the scaling exponents differ significantly from isotropic turbulence. A crossover to Kolmogorov-type scaling is predict...

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Bibliographic Details
Published in:Physical review letters 1989-05, Vol.62 (18), p.2128-2131
Main Authors: PROCACCIA, I, ZEITAK, R
Format: Article
Language:English
Subjects:
Exact sciences and technology
Fluid dynamics
Fundamental areas of phenomenology (including applications)
Physics
Turbulent flows, convection, and heat transfer
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Summary:A dynamical theory for the structure functions in convective turbulence at high Rayleigh numbers is presented. A range of scales is identified in which buoyancy forces dominate and the scaling exponents differ significantly from isotropic turbulence. A crossover to Kolmogorov-type scaling is predicted as a function of the Rayleigh number. (Author)
ISSN:0031-9007
1079-7114
DOI:10.1103/physrevlett.62.2128