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基于Kriging模型的浮空器氦气昼夜温差最优化

林康 马云鹏 武哲 王强

林康, 马云鹏, 武哲, 等 . 基于Kriging模型的浮空器氦气昼夜温差最优化[J]. 北京航空航天大学学报, 2018, 44(3): 542-548. doi: 10.13700/j.bh.1001-5965.2017.0221
引用本文: 林康, 马云鹏, 武哲, 等 . 基于Kriging模型的浮空器氦气昼夜温差最优化[J]. 北京航空航天大学学报, 2018, 44(3): 542-548. doi: 10.13700/j.bh.1001-5965.2017.0221
LIN Kang, MA Yunpeng, WU Zhe, et al. Optimization of aerostat helium temperature differences between day and night based on Kriging model[J]. Journal of Beijing University of Aeronautics and Astronautics, 2018, 44(3): 542-548. doi: 10.13700/j.bh.1001-5965.2017.0221(in Chinese)
Citation: LIN Kang, MA Yunpeng, WU Zhe, et al. Optimization of aerostat helium temperature differences between day and night based on Kriging model[J]. Journal of Beijing University of Aeronautics and Astronautics, 2018, 44(3): 542-548. doi: 10.13700/j.bh.1001-5965.2017.0221(in Chinese)

基于Kriging模型的浮空器氦气昼夜温差最优化

doi: 10.13700/j.bh.1001-5965.2017.0221
详细信息
    作者简介:

    林康  男, 博士研究生。主要研究方向:浮空器热力学

    马云鹏  男, 博士, 讲师, 硕士生导师。主要研究方向:浮空器总体设计

    武哲  男, 博士, 教授, 博士生导师。主要研究方向:浮空器总体设计

    王强  男, 博士, 研究员, 博士生导师。主要研究方向:飞行器气动分析

    通讯作者:

    马云鹏, E-mail: myp@buaa.edu.cn

  • 中图分类号: V273

Optimization of aerostat helium temperature differences between day and night based on Kriging model

More Information
  • 摘要:

    分析浮空器氦气昼夜温差时通常将整个囊体蒙皮涂层设置为同一种材料,分析材料的吸收率与发射率对氦气昼夜温差的影响。为进一步减小氦气昼夜温差,提出了将囊体分为迎光面和背光面,迎光面采用吸收率低的材料,背光面采用发射率高的材料。建立了囊体热力学模型,采用Kriging模型对囊体不同部位的材料特性进行优化,其基本思想是将囊体划分为48个部分,采用拉丁超立方体方法进行抽样,进行热力学分析得到样本的响应,以此建立Kriging近似模型。经过该方法优化后发现,氦气的昼夜温差减小到28.6 K,比传统的分析减少7.7%。

     

  • 图 1  太阳高度角与方位角

    Figure 1.  Solar altitude angle and azimuth angle

    图 2  优化流程示意图

    Figure 2.  Schematic of optimization process

    图 3  囊体划分图

    Figure 3.  Envelop division map

    图 4  囊体温度分布

    Figure 4.  Temperature distribution of envelop

    图 5  样本点1温度分布

    Figure 5.  Temperature distribution of sample point 1

    图 6  改进后囊体白天温度分布

    Figure 6.  Temperature distribution of envelop during day after improvement

    表  1  云遮系数对太阳辐射的影响

    Table  1.   Influence of cloud cover coefficient on solar radiation

    条件 太阳直接辐射强度 地面反射辐射强度
    HHc QD, real =QD QRef=[C2ρg+(1-CF)ρc]·(QD+ QAtm)
    HHc QD, real =CQD QRef=g(QD+ QAtm)
    注:Hc—云层高度;ρc—云层反射率。
    下载: 导出CSV

    表  2  浮空器参数

    Table  2.   Parameters of aerostat

    参数 数值
    直径/m 30
    面积/m2 2 826
    体积/m3 14 130
    飞行高度/km 20
    飞行时间 6月21日(夏至日)
    飞行纬度/(°N) 40
    下载: 导出CSV

    表  3  常用材料的热辐射特性参数

    Table  3.   Thermal radiation characteristic parameters of common materials

    材料 η ε
    白色PVF 0.25~0.40 0.75~0.90
    白色PU 0.35 0.8~0.9
    镀银Teflon 0.10~0.25 0.5~0.8
    下载: 导出CSV

    表  4  样本点1的吸收率

    Table  4.   Absorption rate of sample point 1

    编号 吸收率
    1 0.34
    2 0.23
    3 0.12
    4 0.36
    5 0.23
    6 0.13
    7 0.43
    8 0.32
    9 0.24
    10 0.14
    11 0.10
    12 0.49
    13 0.35
    14 0.18
    15 0.25
    16 0.26
    17 0.18
    18 0.47
    19 0.42
    20 0.48
    21 0.17
    22 0.37
    23 0.29
    24 0.45
    25 0.39
    26 0.33
    27 0.25
    28 0.28
    29 0.46
    30 0.19
    31 0.38
    32 0.28
    33 0.41
    34 0.42
    35 0.12
    36 0.16
    37 0.28
    38 0.11
    39 0.31
    40 0.28
    41 0.18
    42 0.37
    43 0.27
    44 0.12
    45 0.41
    46 0.23
    47 0.26
    48 0.18
    下载: 导出CSV
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出版历程
  • 收稿日期:  2017-04-11
  • 录用日期:  2017-07-07
  • 刊出日期:  2018-03-20

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