Attenuation of Temperature Fluctuations in Thermal Striping

この論文にアクセスする

この論文をさがす

著者

抄録

Thermal striping is random temperature fluctuation generated by the mixing of flow streams at different temperatures. In a liquid-metal-cooled fast breeder reactor (LMFBR), it occurs in the upper plenum as a result of the mixing of sodium coolant jets from fuel assemblies and control rods. It is necessary to consider the temperature cycling in the context of fatigue on the component. A simplified model has been developed to analyze the attenuation of tempera- ture fluctuations from the flow streams to the structure surface. The analytical results were compared with experiments that simulated the upper core structure and impinging jets from fuel sub-assemblies and control rod channels in an LMFBR. Sodium and water were used as simulated fluids to examine the differences in their physical properties. The surface attenuation ratio decreased with the jet flow velocity. The ratio of surface temperature fluctuation to fluid temperature fluctuation is 30-80% in water tests and is 20-50% in sodium tests. These experimental attenuation values almost agreed with the values calculated by the boundary layer theory.

収録刊行物

  • Journal of nuclear science and technology  

    Journal of nuclear science and technology 32(8), 752-762, 1995-08-25 

    Atomic Energy Society of Japan

参考文献:  16件

参考文献を見るにはログインが必要です。ユーザIDをお持ちでない方は新規登録してください。

被引用文献:  2件

被引用文献を見るにはログインが必要です。ユーザIDをお持ちでない方は新規登録してください。

各種コード

  • NII論文ID(NAID)
    10002072896
  • NII書誌ID(NCID)
    AA00703720
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    00223131
  • データ提供元
    CJP書誌  CJP引用  J-STAGE 
ページトップへ