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TECHNICAL PAPERS: Forced Convection

DNS of Turbulent Heat Transfer in Channel Flow With Heat Conduction in the Solid Wall

[+] Author and Article Information
Iztok Tiselj

Jožef Stefan” Institute, Jamova 39, 1000 Ljubljana, SloveniaE-mail: iztok.tiselj@ijs.si

Robert Bergant, Borut Mavko

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

Ivan Bajsić

Faculty of Mechanical Engineering, University of Ljubljana, 1000 Ljubljana, Slovenia

Gad Hetsroni

Faculty of Mechanical Engineering, Technion-Israel Institute of Technology, 32000 Haifa, Israel

J. Heat Transfer 123(5), 849-857 (Mar 16, 2001) (9 pages) doi:10.1115/1.1389060 History: Received September 09, 2000; Revised March 16, 2001
Copyright © 2001 by ASME
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References

Figures

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Profiles of mean temperature: (a) Pr=0.71; (b) Pr=5,Pr=7.
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Profiles of RMS temperature fluctuations: (a) Pr=0.71; (b) Pr=5; (c) Pr=7.
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Profiles of the turbulent axial heat flux: (a) Pr=0.71; (b) Pr=5; (c) Pr=7.
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Profiles of the turbulent wall-normal heat flux: (a) Pr=0.71; (b) Pr=5; (c) Pr=7.
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Two-point streamwise correlation of temperature fluctuations: (a) Pr=0.71 at y+=6.5 (Kasagi at y+=5.1); (b) Pr=7 at y+=1.9.
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Two-point spanwise correlation of temperature fluctuations: (a) Pr=0.71 at y+=6.5 (Kasagi at y+=5.1); (b) Pr=7 at y+=1.9.
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Profiles of RMS temperature fluctuations at Pr=7 for different thermal activity ratios K and thick wall d++=20: (a) fluctuations in the fluid; (b) fluctuations inside the wall.
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Profiles of RMS temperature fluctuations at Pr=7 for thermal activity ratio K=1 and walls of different thickness d++: (a) fluctuations in the fluid; (b) fluctuations inside the wall.
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Ratio of the RMS wall temperature fluctuations to that on the ideal isoflux wall: (a) Pr=0.71, (b) Pr=7. Solid lines with “+” and “−” for uncertainty denote the present DNS results, dotted lines with “x” are results of Kasagi et al. 2.

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