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Flux scaling and plume structure in high Ra - high Sc turbulent convection

Puthenveettil, Baburaj A and Arakeri, Jaywant H (2004) Flux scaling and plume structure in high Ra - high Sc turbulent convection. In: Proceedings of the Tenth Asian Congress of Fluid Mechanics, 17--21, May 2004, Peradeniya, Srilanka.

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Abstract

The arrangement of brine above water across a micro porous permeable membrane is used to study high Rayleigh Number($10^{11}- 10^{10}$)high Schmidt number(650)turbulent convection. The flux shows 4/3$^{rd}$ scaling with line plume as the near wall coherent structures. Shifting of multiple large scale flow cells result in changing near membrane mean shear directions for large aspect ratios. Lower aspect ratios show single large scale flow cell and constant sense of mean shear.

Item Type: Conference Paper
Keywords: Turbulent convection;Plumes;Rayleigh number
Department/Centre: Division of Mechanical Sciences > Mechanical Engineering
Date Deposited: 09 Oct 2004
Last Modified: 19 Sep 2010 04:14
URI: http://eprints.iisc.ernet.in/id/eprint/1247

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