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TECHNICAL PAPERS: Forced Convection

The Effect of Support Grid Features on Local, Single-Phase Heat Transfer Measurements in Rod Bundles

[+] Author and Article Information
Mary V. Holloway, Heather L. McClusky, Donald E. Beasley

Department of Mechanical Engineering, Clemson University, Clemson, SC 29634

Michael E. Conner

Westinghouse Nuclear Fuel, 5801 Bluff Road, Columbia, SC 29250

J. Heat Transfer 126(1), 43-53 (Mar 10, 2004) (11 pages) doi:10.1115/1.1643091 History: Received December 23, 2002; Revised October 03, 2003; Online March 10, 2004
Copyright © 2004 by ASME
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References

Figures

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Schematic diagram of 5×5 rod bundle assembly
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Representative drawings of support grid designs for the following: (a) grids A, E, and G; (b) grid B; (c) grid C; and (d) grids D, F, and H.
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Typical rod bundle subchannel with split-vane pair
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Drawing of experimental facility
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Drawing of heated copper sensor
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Nusselt numbers for standard grids A and G ε=εs=0.20
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Nusselt numbers for standard grid E ε=εs=0.14
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Nusselt number normalized by hydrodynamically fully developed Nusselt number for standard grids A and G, ε=εs=0.20
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Nusselt number normalized by hydrodynamically fully developed Nusselt number for support grids with disk blockage, grids B and C, ReDh=28,000,εs=0.20
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Nusselt number normalized by hydrodynamically fully developed Nusselt number for grid F, εs=0.14,Kfeat/Kv=0.15
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Nusselt number normalized by hydrodynamically fully developed Nusselt number for grids D, F, H, ReDh=28,000
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Nusselt number normalized by hydrodynamically fully developed Nusselt number for grids D, F, H, ReDh=42,000
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Nusselt number normalized by hydrodynamically fully developed Nusselt number for grids A, B, C, and D, ReDh=28,000,εs=0.20

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