円形衝突噴流における非定常熱移動過程

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  • Transient Heat Transfer Process in a Circular Impinging Jet.
  • エンケイ ショウトツ フンリュウ ニ オケル ヒテイジョウ ネツ イドウ カテイ

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This paper describes the transient process of the impingement heat transfer and flow in a narrow space with confined wall from a single circular nozzle. Three dimensional governing equations were solved in unsteady condition for water by the SIMPLE method and QUICK scheme. At first, the generation process of a recirculated region near the upper insulated wall was clarified. Three heat transfer regions, namely, two-dimensional forced convection region, three-dimensional mixed convection rgion and natural convection region move along raedial direction with time. Local heat transfer corresponding to the flow process takes the meximum and minimum values along the radial and peripheral direction.

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