Inlet throttling effect on the boiling two-phase flow stability in a natural circulation loop with a chimney

M. Furuya, F. Inada, A. Yasuo

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Experiments have been conducted to investigate an effect of inlet restriction on the thermal-hydraulic stability. A Test facility used in this study was designed and constructed to have non-dimensional values that are nearly equal to those of natural circulation BWR. Experimental results showed that driving force of the natural circulation at the stability boundary was described as a function of heat flux and inlet subcooling independent of inlet restriction. In order to extend experimental database regarding thermal-hydraulic stability to different inlet restriction, numerical analysis was carried out based on the homogeneous flow model. Stability maps in reference to the core inlet subcooling and heat flux were presented for various inlet restrictions using the above-mentioned function. Instability region during the inlet subcooling shifted to the higher inlet subcooling with increasing inlet restriction and became larger with increasing heat flux.

Original languageEnglish
Pages (from-to)111-115
Number of pages5
JournalHeat and Mass Transfer/Waerme- und Stoffuebertragung
Volume37
Issue number2-3
DOIs
Publication statusPublished - 2001 Apr 1

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Fluid Flow and Transfer Processes

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