| 单面与双面加热时窄缝流道内过冷沸腾气泡行为的比较 |
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| 引用本文： | 潘良明,何川,辛明道,吴小航. 单面与双面加热时窄缝流道内过冷沸腾气泡行为的比较[J]. 化工学报, 2004, 55(9): 1519-1522 |
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| 作者姓名： | 潘良明 何川 辛明道 吴小航 |
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| 作者单位： | 重庆大学工程热物理研究所,重庆,400044;中国核动力研究设计院反应堆工程所,四川,成都,610041 |
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| 基金项目： | 国家重点基础研究发展规划项目 (No G2 0 0 0 0 2 63 0 5 )，空泡物理和自然循环重点实验室开放基金资助 ~~ |
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| 摘 要： | 引 言流道几何尺寸影响到流动沸腾换热的特性 ,窄缝内的气泡动力学特征与非窄缝有很大差异 .工程技术中有许多场合应用到窄缝流动特性[1] .Rizwan Uddin等[2 ] 对单热流和双峰热流的两相流进行了稳定性分析 ,发现热流对稳定性边界图影响不大 ,而对入口过冷度等系统参数影响较大 .Yoshida等[3,4 ] 对各种工质的单管和双管内热虹吸进行了研究 ,发现单管和双管内的热虹吸及传热、流型等存在很大差异 .单面及双面加热时应该和热虹吸管内情况较类似 ,但还未见关于矩形窄缝流动沸腾单双面气泡动力学问题的研究报道 . 在长期科研实践中 ,得到…
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| 关 键 词： | 过冷流动沸腾 气泡行为 单面加热 双面加热 窄缝流道 |
| 文章编号： | 0438-1157(2004)09-1519-04 |
| 收稿时间： | 2003-12-29 |
| 修稿时间： | 2004-4-5 |
COMPARISON OF BUBBLE BEHAVIOR FOR DOUBLE-SIDE AND SINGLE-SIDE HEATING OF SUBCOOLED FLOW BOILING IN NARROW CHANNELS |
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| PAN Liangming,HE Chuan,XIN Mingdao,WU Xiaohang. COMPARISON OF BUBBLE BEHAVIOR FOR DOUBLE-SIDE AND SINGLE-SIDE HEATING OF SUBCOOLED FLOW BOILING IN NARROW CHANNELS[J]. Journal of Chemical Industry and Engineering(China), 2004, 55(9): 1519-1522 |
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| Authors: | PAN Liangming HE Chuan XIN Mingdao WU Xiaohang |
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| Abstract: | The bubble behavior of subcooled R-12 flow boiling in the narrow channels with both double-side and single-side heating was studied experimentally.Experimental settings are: a test-section heating length of 400 mm,a cross-section of 35 mm in width and 2mm in gap size,a mass flux of 700～1500 kg•m-2•s-1,a heat flux of 25～70 kW•m-2 and a pressure of 1.3～2.0 MPa.A comparison was made in terms of the onset of nucleate boiling(ONB)point and bubble characters with other flow pattern. The study found that with some appropriate modifications, the characteristics of double-side heating and single-side heating showed a better similarity. |
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| Keywords: | subcooled flow boiling bubble behavior single-side heating double-side heating narrow channels |
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