自然循環気液二相流における流動不安定現象に関する数値解析

DOI HANDLE オープンアクセス
  • 古賀 健彦
    九州大学大学院総合理工学研究科エネルギー変換工学専攻
  • 饒 燕飛
    九州大学大学院総合理工学研究科エネルギー変換工学専攻
  • 福田 研二
    九州大学大学院総合理工学研究科エネルギー変換工学専攻

書誌事項

タイトル別名
  • Numerical Analysis of Flow Instabilities in Natural Circulation Two Phase Flows

この論文をさがす

抄録

This paper deals with fundamentals of the geysering and density-wave instabilities that may occur during the start-up process of a natural-circulation BWR, with the focus placed on revealing the difference in mechanisms of the two instabilities. Numerical analysis is conducted using a simple, one-dimensional homogeneous two-phase flow model with the effect of flashing taken into consideration. Through comparison of the numerical results with experimentally recorded void-distribution and flow rat6 0scillations, the different mechanisms of the geysering and the density-wave instabilities are revealed. The geysering instability is found to occur when the effect of flashing is strong enough to form a large, rapidly-growing bubble that can rapidly accelerate the liquid plug above it. An expulsion at the channel outlet actually starts at the moment when the liquid plug is pushed out of the channel.

収録刊行物

詳細情報 詳細情報について

  • CRID
    1390290699813643904
  • NII論文ID
    110000156378
  • NII書誌ID
    AN00055101
  • DOI
    10.15017/17431
  • HANDLE
    2324/17431
  • 本文言語コード
    ja
  • データソース種別
    • JaLC
    • IRDB
    • CiNii Articles
  • 抄録ライセンスフラグ
    使用可

問題の指摘

ページトップへ