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TECHNICAL NOTES

Assessment of Periodic Flow Assumption for Unsteady Heat Transfer in Grooved Channels

[+] Author and Article Information
Yongmann M. Chung

School of Engineering and also the Centre for Scientific Computing, University of Warwick, Coventry CV4 7AL, United Kingdom

Paul G. Tucker

Civil and Computational Engineering Centre, University of Wales, Swansea, Swansea SA2 8PP, Wales, United Kingdom

J. Heat Transfer 126(6), 1044-1047 (Jan 26, 2005) (4 pages) doi:10.1115/1.1833371 History: Received January 14, 2004; Revised September 16, 2004; Online January 26, 2005
Copyright © 2004 by ASME
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References

Chung, Y. M., Tucker, P. G., and Luo, K. H., 2001, “Large-Eddy Simulation of Complex Internal Flows,” in Direct and Large-Eddy Simulation IV, B. J. Geurts, R. Friedrich, and O. Mètais, eds., Kluwer Academic Publishers, The Netherlands, pp. 373–380.
Chung,  Y. M., Luo,  K. H., and Sandham,  N. D., 2002, “Numerical Study of Momentum and Heat Transfer in Unsteady Impinging Jets,” Int. J. Heat Fluid Flow, 23, pp. 592–600.
Chung,  Y. M., Tucker,  P. G., and Roychowdhury,  D. G., 2003, “Unsteady Laminar Flow and Convective Heat Transfer in a Sharp 180° Bend,” Int. J. Heat Fluid Flow, 24, pp. 67–76.
Chung,  Y. M., and Luo,  K. H., 2002, “Unsteady Heat Transfer Analysis of an Impinging Jet,” ASME J. Heat Transfer, 124, pp. 1039–1048.
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Figures

Grahic Jump Location
Problem definition and computational domain. The temperature of the blocks is Tb and the temperature of the other walls is Ti.
Grahic Jump Location
Time-mean streamline contours. (a) b/h=2, (b) b/h=4 and (c) b/h=6.
Grahic Jump Location
Time-mean temperature contours. (a) b/h=2, (b) b/h=4 and (c) b/h=6.
Grahic Jump Location
Cf distributions around the blocks. (a) b/h=2, (b) b/h=4, and (c) b/h=6.
Grahic Jump Location
Nu distributions around the blocks. (a) b/h=2, (b) b/h=4, and (c) b/h=6.
Grahic Jump Location
Distributions between blocks for b/h=6: (a) Cf and (b) Nu
Grahic Jump Location
Average Cf and Nu around the block: (a) CfU, (b) NuA, and (c) NuI

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