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发动机舱内部传热和蒙皮的降温规律

王杏涛 张靖周 单勇

王杏涛, 张靖周, 单勇. 发动机舱内部传热和蒙皮的降温规律[J]. 航空动力学报, 2016, 31(5): 1121-1126. doi: 10.13224/j.cnki.jasp.2016.05.013
引用本文: 王杏涛, 张靖周, 单勇. 发动机舱内部传热和蒙皮的降温规律[J]. 航空动力学报, 2016, 31(5): 1121-1126. doi: 10.13224/j.cnki.jasp.2016.05.013
WANG Xing-tao, ZHANG Jing-zhou, SHAN Yong. Internal heat transfer and skin temperature reduction law of engine nacelle[J]. Journal of Aerospace Power, 2016, 31(5): 1121-1126. doi: 10.13224/j.cnki.jasp.2016.05.013
Citation: WANG Xing-tao, ZHANG Jing-zhou, SHAN Yong. Internal heat transfer and skin temperature reduction law of engine nacelle[J]. Journal of Aerospace Power, 2016, 31(5): 1121-1126. doi: 10.13224/j.cnki.jasp.2016.05.013

发动机舱内部传热和蒙皮的降温规律

doi: 10.13224/j.cnki.jasp.2016.05.013
详细信息
    作者简介:

    王杏涛(1987-),男,河南洛阳人,博士生,主要从事红外隐身及发动机舱通风隔热研究.

  • 中图分类号: V231.1

Internal heat transfer and skin temperature reduction law of engine nacelle

  • 摘要: 建立了简化的发动机舱物理模型,对通风冷却和辐射遮挡的蒙皮降温效果进行了数值模拟和实验研究,并对发动机舱内部传热规律进行了分析.结果表明:数值计算得到的发动机舱蒙皮表面沿程分布与实验结果吻合良好.在加热壁面分段的热边界条件下,无辐射遮挡且无通风时蒙皮内侧表面接受的热流占热壁面加热热流的比值约为78%,当发动机舱通风速度达到1m/s时该比值降至20%;当通风速度从0m/s增大至3.5m/s时,发动机舱蒙皮峰值温度的降幅约为10%;无通风条件下有辐射遮挡的蒙皮峰值温度相对于无辐射遮挡的情形降幅约为6%;在通风冷却和辐射遮挡的综合作用下,蒙皮峰值温度相对于无通风且无辐射遮挡的基准状况可降低约50K,相对降幅约为14%.

     

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出版历程
  • 收稿日期:  2014-09-05
  • 刊出日期:  2016-05-28

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