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TECHNICAL PAPERS

On Prediction of Thermal-Hydraulic Characteristics of Square-Sectioned Ribbed Cooling Ducts

[+] Author and Article Information
Arash Saidi, Bengt Sundén

Division of Heat Transfer, Lund Institute of Technology, 221 00 Lund, Sweden

J. Turbomach 123(3), 614-620 (Mar 01, 2001) (7 pages) doi:10.1115/1.1371779 History: Received March 01, 2001
Copyright © 2001 by ASME
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References

Figures

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One module of the two-sided ribbed square duct, aspect ratio is unity (dashed lines show the plane in Fig. 2)
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Secondary flow vectors in a YZ cross-sectional plane, at X/e=5.5; (a) EASM and (b) EVM predictions (AKN predictions)
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U component between two adjacent ribs at Y/e=0.1 in the symmetry plane (y/D=0.05)
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Flow entrainment between the ribs at Y/e=1 in symmetry plane
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The rms of vertical fluctuation velocity component between the ribs at Y/e=0.3 in symmetry plane
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Streamwise fluctuation component in the duct center, Y/D=0.5,Z/D=0.5
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Vertical fluctuation component in the duct center, Y/D=0.5,Z/D=0.5
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Nusselt number enhancement predictions compared to experimental results of 6 along the symmetry line of the duct between adjacent ribs
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Nusselt number enhancement pattern over the smooth side wall: (a) EVM with AKN model, (b) EASM with AKN model, (c) EVM with CHC model, and (d) EASM with CHC model predictions, (e) experimental results from Rau et al. 6

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