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RESEARCH PAPERS

On the Calculation of Flow and Heat Transfer Characteristics for CANDU-Type 19-Rod Fuel Bundles

[+] Author and Article Information
Yuh-Shan Yueh, Ching-Chang Chieng

National Tsing Hua University, Hsinchu, Taiwan 300, Republic of China

J. Heat Transfer 109(3), 590-598 (Aug 01, 1987) (9 pages) doi:10.1115/1.3248129 History: Received October 24, 1984; Online October 20, 2009

Abstract

A numerical study is reported of flow and heat transfer in a CANDU-type 19 rod fuel bundle. The flow domain of interest includes combinations of triangular, square, and peripheral subchannels. The basic equations of momentum and energy are solved with the standard k –ε model of turbulence. Isotropic turbulent viscosity is assumed and no secondary flow is considered for this steady-state, fully developed flow. Detailed velocity and temperature distributions with wall shear stress and Nusselt number distributions are obtained for turbulent flow of Re = 4.35 × 104 , 105 , 2 × 105 , and for laminar flow of Re ∼ 2400. Friction factor and heat transfer coefficients of various subchannels inside the full bundle are compared with those of infinite rod arrays of triangular or square arrangements. The calculated velocity contours of peripheral subchannel agreed reasonably with measured data.

Copyright © 1987 by ASME
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