Proceedings of the Korean Nuclear Society Conference (한국원자력학회:학술대회논문집)

Korean Nuclear Society (한국원자력학회)
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Single and Two-Phase Flow Pressure Drop for CANFLEX Bundle

  • Park, Joo-Hwan (Korea Atomic Energy Research Institute) ;
  • Jun, Ji-Sun (Korea Atomic Energy Research Institute) ;
  • Suk, Ho-Chun (Korea Atomic Energy Research Institute) ;
  • Dimmick, G.R. (Atomic Energy of Canada Limited) ;
  • Bullock, D.E. (Atomic Energy of Canada Limited)
  • Published : 1998.05.01
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Abstract

Friction factor and two-phase flow frictional multiplier for a CANFLEX bundle are newly developed and presented in this paper. CANFLEX as a 43-element fuel bundle has been developed jointly by AECL/KAERI to provide greater operational flexibility for CANDU reactor operators and designers. Friction factor and two-phase flow frictional multiplier have been developed by using the experimental data of pressure drops obtained from two series of Freon-l34a (R-134a) CHF tests with a string of simulated CANFLEX bundles in a single phase and a two-phase flow conditions. The friction factor for a CANFLRX bundle is found to be about 20 % higher than that of Blasius for a smooth circular pipe. The pressure drop predicted by using the new correlations of friction factor and two-phase frictional multiplier are well agreed with the experimental pressure drop data of CANFLEX bundle within ${\pm}\;5\;%$ error.

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