A Transformation relating temporal and spatial spectra of turbulent kinetic energy

A Transformation relating temporal and spatial spectra of turbulent kinetic energy
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Total Pages : 16
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ISBN-10 : MINN:20000003297021
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Book Synopsis A Transformation relating temporal and spatial spectra of turbulent kinetic energy by : W. C. Thacker

Download or read book A Transformation relating temporal and spatial spectra of turbulent kinetic energy written by W. C. Thacker and published by . This book was released on 1977 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: A transformation is developed, based upon the scale dependence of turbulent diffusion, that relates temporal and spatial spectra of turbulent kinetic energy. The basic idea is that an eddy diffusivity is appropriate when scales of the flow smaller than a length e and a time tare unresolved. An expression similar to Heisenberg's for eddy diffusivity is used to obtain the connection between e and t necessary to transform temporal spectra into spatial spectra. This transformation reveals a close connection between Webster's Site D spectrum of turbulent kinetic energy in the ocean and Okubo's diagrams of oceanic mixing. Furthermore, all spectra obtained from dimensional arguments satisfy this transformation.


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