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超临界压力RP-3在竖直细圆管内混合对流研究

贾洲侠 徐国强 闻洁 龙晓东 王越

贾洲侠, 徐国强, 闻洁, 等 . 超临界压力RP-3在竖直细圆管内混合对流研究[J]. 北京航空航天大学学报, 2016, 42(1): 152-157. doi: 10.13700/j.bh.1001-5965.2015.0066
引用本文: 贾洲侠, 徐国强, 闻洁, 等 . 超临界压力RP-3在竖直细圆管内混合对流研究[J]. 北京航空航天大学学报, 2016, 42(1): 152-157. doi: 10.13700/j.bh.1001-5965.2015.0066
JIA Zhouxia, XU Guoqiang, WEN Jie, et al. Investigation of mixed convection of supercritical pressure RP-3 in vertical round tube[J]. Journal of Beijing University of Aeronautics and Astronautics, 2016, 42(1): 152-157. doi: 10.13700/j.bh.1001-5965.2015.0066(in Chinese)
Citation: JIA Zhouxia, XU Guoqiang, WEN Jie, et al. Investigation of mixed convection of supercritical pressure RP-3 in vertical round tube[J]. Journal of Beijing University of Aeronautics and Astronautics, 2016, 42(1): 152-157. doi: 10.13700/j.bh.1001-5965.2015.0066(in Chinese)

超临界压力RP-3在竖直细圆管内混合对流研究

doi: 10.13700/j.bh.1001-5965.2015.0066
基金项目: 国家自然科学基金(50676005)
详细信息
    作者简介:

    贾洲侠男,博士研究生。主要研究方向:超临界压力流体流动与换热。E-mail:by1104106@buaa.edu.cn;徐国强男,教授。主要研究方向:航空发动机热防护、高效换热器、超临界流体流动与换热和太阳能光热发电等。Tel.:010-82317402E-mail:guoqiang_xu@buaa.edu.cn

    通讯作者:

    徐国强,Tel.:010-82317402E-mail:guoqiang_xu@buaa.edu.cn

  • 中图分类号: V312

Investigation of mixed convection of supercritical pressure RP-3 in vertical round tube

Funds: National Natural Science Foundation of China (50676005)
  • 摘要: 研究了超临界压力下碳氢燃料航空煤油RP-3在竖直细圆管内混合对流,分析了浮升力及热物性对碳氢燃料在垂直管中对流换热的影响。实验中控制热流密度从200~500 kW/m2变化,进口压力变化范围为3~5 MPa,进口雷诺数从5 000~10 500范围内变化。研究表明:在向上流动情况中进口段存在较为明显的入口效应,换热出现恶化现象,而在向下流动中未出现;对于向上和向下流动,由于热物性的综合影响,换热系数沿流动方向增大;在较低进口雷诺数(Re=5 700)时,对于向下流动,随着浮升力影响的增大,浮升力改变了流体径向速度分布,出现了换热强化;在较高进口雷诺数(Re=10 500)时,浮升力对换热的影响依然显著;判别式Bo*数小于5.6×10-7未能预测浮升力对碳氢燃料换热影响。

     

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出版历程
  • 收稿日期:  2015-01-30
  • 网络出版日期:  2016-01-20

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