Real-Space Manifestations of Bottlenecks in Turbulence Spectra

Frisch, Uriel and Ray, Samriddhi Sankar and Sahoo, Ganapati and Banerjee, Debarghya and Pandit, Rahul (2013) Real-Space Manifestations of Bottlenecks in Turbulence Spectra. In: PHYSICAL REVIEW LETTERS, 110 (6).

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Abstract

An energy-spectrum bottleneck, a bump in the turbulence spectrum between the inertial and dissipation ranges, is shown to occur in the nonturbulent, one-dimensional, hyperviscous Burgers equation and found to be the Fourier-space signature of oscillations in the real-space velocity, which are explained by boundary-layer-expansion techniques. Pseudospectral simulations are used to show that such oscillations occur in velocity correlation functions in one- and three-dimensional hyperviscous hydrodynamical equations that display genuine turbulence. DOI: 10.1103/PhysRevLett.110.064501

Item Type:	Journal Article
Publication:	PHYSICAL REVIEW LETTERS
Publisher:	AMER PHYSICAL SOC
Additional Information:	Copyright for this article belongs to AMER PHYSICAL SOC, USA
Department/Centre:	Division of Physical & Mathematical Sciences > Physics
Date Deposited:	18 Mar 2013 05:25
Last Modified:	18 Mar 2013 05:25
URI:	http://eprints.iisc.ac.in/id/eprint/46070

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