Prediction of Critical Heat Flux in Annular Flow Using a Film Flow Model
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概要
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A new set of correlations for the film flow analysis was developed to predict the critical heat flux in annular flow regime accurately. All the correlations adopted here were based on experimental data or considerations of the processes in annular flow; the resulting model required no parameters that should be adjusted from the measured data of critical heat flux. The 4,375 data of critical heat flux in forced flow of water in vertical uniformly heated round tubes were used to test the basic performance of the model. The comparisons between the calculated and measured critical heat fluxes showed that the predicted results by the present model agree with the experimental data fairly well if the flow pattern at the onset of critical heat flux condition is considered annular flow. The predictive capability was not deteriorated even in the cases of small diameter tube, short length tube as well as low vapor quality. Good agreements were also achieved in the preliminary tests against the critical heat flux data for Freon 12 and Freon 21. It is expected from these results that the present model satisfactorily expresses the important phenomena to predict the critical heat flux in annular flow regime.
- 社団法人 日本原子力学会の論文
- 2003-06-25
著者
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小谷 章雄
SPring-8
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Kotani Akio
Department Of Neurological Surgery Nihon University School Of Medicine.
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OKAWA Tomio
Department of Mechanophysics Engineering, Osaka University
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KATAOKA Isao
Department of Mechanophysics Engineering, Osaka University
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Kotani Akio
Department Of Mechanical Engineering Osaka University
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NAITO Masanori
Advanced Simulation Systems Department, Nuclear Power Engineering Corporation
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Naito Masanori
Advanced Simulation Systems Department Nuclear Power Engineering Corporation
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Tomio Okawa
Department Of Mechanical Engineering Osaka University
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Okawa Tomio
Department Of Mechanophysics Engineering Osaka University
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小谷 章雄
理化学研究所播磨研究所
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Kataoka I
Department Of Mechanical Engineering Osaka University
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Kataoka I
Department Of Mechanophysics Engineering Osaka University
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Kataoka Isao
Department Of Mechanical Engineering Graduate School Of Engineering Osaka University
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