| An investigation of flow characteristics and critical heat flux in vertical upward round tube |
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| 引用本文： | FAN Pu QIU Sui-Zheng JIA Dou-Nan. An investigation of flow characteristics and critical heat flux in vertical upward round tube[J]. 核技术(英文版), 2006, 17(3): 170-176. DOI: 10.1016/S1001-8042(06)60033-X |
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| 作者姓名： | FAN Pu QIU Sui-Zheng JIA Dou-Nan |
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| 作者单位： | State Key Laboratory of Multiphase Flow in Power Engineering, Xi＇an Jiaotong University, Xi＇an 710049, China |
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| 摘 要： | Prediction of critical heat flux （CHF） in annular flow is important for the safety of once - through steam generator and the reactor core under accident conditions. The dryout in annular flow occurs at the point where the film is depleted due to entrainment, deposition, and evaporation. The film thickness, film mass flow rate along axial distribution, and CHF are calculated in vertical upward round tube on the basis of a separated flow modcl of annular flow. The theoretical CHF values are higher than those derived from experimental data, with error being within 30%.
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| 关 键 词： | 环流 临界热通量 沉积 挟带 核反应堆工程 |
| 收稿时间： | 2005-12-16 |
An investigation of flow characteristics and critical heat flux in vertical upward round tube |
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| FAN Pu,QIU Sui-Zheng,JIA Dou-Nan. An investigation of flow characteristics and critical heat flux in vertical upward round tube[J]. , 2006, 17(3): 170-176. DOI: 10.1016/S1001-8042(06)60033-X |
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| Authors: | FAN Pu QIU Sui-Zheng JIA Dou-Nan |
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| Affiliation: | State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, Xi'an 710049, China |
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| Abstract: | Prediction of critical heat flux (CHF) in annular flow is important for the safety of once- through steam generator and the reactor core under accident conditions. The dryout in annular flow occurs at the point where the film is depleted due to entrainment, deposition, and evaporation. The film thickness, film mass flow rate along axial distribution, and CHF are calculated in vertical upward round tube on the basis of a separated flow model of annular flow. The theoretical CHF values are higher than those derived from experimental data, with error being within 30%. |
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| Keywords: | Annular flow Critical heat flux Dryout Entrainment Deposition |
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