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Turbulent flow in a channel with transverse rib heat transfer augmentation

✍ Scribed by B.H. Chang; A.F. Mills

Publisher: Elsevier Science
Year: 1993
Tongue: English
Weight: 795 KB
Volume: 36
Category: Article
ISSN: 0017-9310
DOI: 10.1016/s0017-9310(05)80056-0

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✦ Synopsis

Turbulent flow in a two-dimensional channel with repeated rectangular rib roughness was numerically simulated using a low Reynolds number form of the k-6 turbulence model. Friction factors and average Stanton numbers were calculated for various pitch to rib height ratios and bulk Reynolds numbers. Comparisons with experiment were generally adequate, with the predictions of friction superior to those for heat transfer. The effect of variable properties for channel flow was investigated. and the results showed a greater efiect for friction than for heat transfer. Comparison with experiment yielded no clear conclusions.

The turbulence model was also validated for a related problem. Lhat of Row downstream of an abrupt pipe expansion.

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