Post-Dryout Heat Transfer Analysis Model with Droplet Lagrangian Simulation(<Special Issue>International Conferences on Power and Energy)
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概要
- 論文の詳細を見る
Post-dryout heat transfer analysis was carried out considering droplet behavior by using the Lagrangian simulation method. Post-dryout heat transfer is an important heat transfer mechanism in many industrial appliances. Especially in recent Japanese BWR licensing, the standard for assessing the integrity of fuel that has experienced boiling transition is being examined. Although post-dryout heat transfer analysis is important when predicting wall temperature, it is difficult to accurately predict the heat transfer coefficient in the post-dryout regime because of the many heat transfer paths and non-equilibrium status between droplet and vapor. Recently, an analysis model that deals with many heat transfer paths including droplet direct contact heat transfer was developed and its results showed good agreement with experimental results. The model also showed that heat transfer by droplet could not be neglected in the low mass flux condition. However, the model deals with droplet deposition behavior by experimental droplet deposition correlation, so it cannot estimate the effect of droplet flow on turbulent flow field and heat transfer. Therefore, in this study we deal with many droplets separately by using the Lagrangian simulation method and hence estimate the effect of droplet flow on the turbulent flow field. We analyzed post-dryout experimental results and found that they correlated well with the analysis results.
- 一般社団法人日本機械学会の論文
- 2006-05-15
著者
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MISHIMA Kaichiro
Research Reactor Institute, Kyoto University
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KATAOKA Isao
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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MATSUURA Keizo
Nuclear Fuel Industries, Ltd.
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Matsuura Keizo
Nuclear Fuel Industries Ltd.
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Mishima Kaichiro
Research Reactor Institute Kyoto University
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