鉛直面上の体積力対流の波流および乱流膜状凝縮 : 平均熱伝達係数の整理式〔熱工学, 内燃機関, 動力など〕

概要

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The experimental study of body forced convection of pure vapor on a vertical surface (l=2980 mm) is presented. CFC11,CFC113 and HCFC123 are used as the working fluids. The flow patterns of condensate film are classified into four kinds of flow : L flow (laminar flow), L-S flow (laminar and sine wave flow), L-S-H folw (laminar, sine wave and harmonic wave flow), L-S-H-T flow (laminar, sine wave, harmonic wave and turbulent flow). The nondimensional correlations for predicting the average heat-transfer coefficients are obtained for four kinds of flow and compared with the experimental results, respectively. Assuming more simple four kinds of flow patterns, which are L flow, S flow (sine wave flow), H folw (harmonic wave flow) and T flow (turbulent flow), simple nondimensional correlations for predicting the average heat-transfer coefficients are also obtained for S flow, H flow and T flow. The nondimensional correlations for combined H and T flow are also obtained.
社団法人日本機械学会の論文
1997-12-25