環状層流衝突噴流熱伝達に及ぼすノズル内管位置の影響 Effect of Inner-tube Position on Heat Transfer of Laminar Annular Impinging Jet with Confined Wall

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Present paper describes on the heat transfer and flow characteristics of a laminar annular impinging jet for various positions of inner-tube. In the first case, inner-tube is protruded to the flow passage. In the second case, inner-tube is retracted and relatively, outer-tube with confined insulated wall is protruded. Numerical values were obtained for the dimensionless distance between nozzle and impingement surface, H =0.5,1.0, the diameter ratio, d/D=0.2~0.6, the protrusion or retraction dimensionless length, L/H=0.0~0.8 at the Reynolds number, Re=1,000,the Prandtl number, Pr =0.72 and Grashof number, Gr = 1,000, In the first case, the flow is divided into the stagnant regionand the recirculated region in the minor flow and the major flow region. The local heat transfer for minor flow is depressed with increase of L/H. In the second case, the heat transfer increases locally with increase of L/H. Consequently, local heat transfer is controlled by combining protrusion and retraction.

収録刊行物

  • 日本冷凍空調学会論文集

    日本冷凍空調学会論文集 14(3), 213-220, 1997-11-01

    公益社団法人 日本冷凍空調学会

参考文献:  5件中 1-5件 を表示

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    被引用文献1件

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    被引用文献1件

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    Proc. 5th International Symposium Computational Fluid Dynamics, (Sendai) 1, 211-214, 1993

    被引用文献1件

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    Numerical Heat Transfer and Fluid Flow, 25-134, 1980

    被引用文献1件

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    Heat and Mass Transfer in Recirculating Flows, 98-112, 1969

    被引用文献1件

被引用文献:  1件中 1-1件 を表示

各種コード

  • NII論文ID(NAID)
    10002714154
  • NII書誌ID(NCID)
    AA11125910
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    13444905
  • NDL 記事登録ID
    4353635
  • NDL 雑誌分類
    ZN14(科学技術--機械工学・工業--熱機関)
  • NDL 請求記号
    Z16-1394
  • データ提供元
    CJP書誌  CJP引用  NDL  J-STAGE 
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