Convection Velocity of Temperature Fluctuations in a Turbulent Flume

[+] Author and Article Information
G. Hetsroni, A. Mosyak, E. Pogrebnyak

Department of Mechanical Engineering, Technion—Israel Institute of Technology, 3200 Haifa, Israel

I. Tiselj, R. Bergant

“Jožef Stefan” Institute, Jamova 39, 1000 Ljubljana, Slovenia

J. Heat Transfer 126(5), 843-848 (Nov 16, 2004) (6 pages) doi:10.1115/1.1797032 History: Received October 28, 2003; Revised June 30, 2004; Online November 16, 2004
Copyright © 2004 by ASME
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Grahic Jump Location
Turbulent heat flux. Pr=54. (a) streamwise heat flux θ+u+; and (b) wall-normal heat flux θ+v+ (– Tw=const, Dong et al. 2 - - - - q=const, Dong et al. 2).
Grahic Jump Location
Fractional contribution of the wall-normal heat flux from each quadrant, −+u+)j/θ+u+: (a) Pr=1, and (b) Pr=54 (solid lines, closed symbols—isothermal wall boundary condition (H1), dashed lines, open symbols—isoflux wall boundary condition (H2))
Grahic Jump Location
Convection velocities of the streamwise component of velocity fluctuation, u, convection velocities of temperature fluctuation at isothermal wall boundary condition, Tw, and convection velocities of temperature fluctuation at isoflux wall boundary condition, qw: (a) Pr=1, (b) Pr=5.4, and (c) Pr=54
Grahic Jump Location
Dependence of convection velocities of temperature fluctuation on Prandtl number



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