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风洞试验段闭口与开口模式下流场的数值模拟与实验研究

廖鹏 傅继阳 马文勇 何运成

廖鹏, 傅继阳, 马文勇, 何运成. 风洞试验段闭口与开口模式下流场的数值模拟与实验研究[J]. 工程力学, 2022, 39(S): 164-172. doi: 10.6052/j.issn.1000-4750.2021.05.S032
引用本文: 廖鹏, 傅继阳, 马文勇, 何运成. 风洞试验段闭口与开口模式下流场的数值模拟与实验研究[J]. 工程力学, 2022, 39(S): 164-172. doi: 10.6052/j.issn.1000-4750.2021.05.S032
LIAO Peng, FU Ji-yang, MA Wen-yong, HE Yun-cheng. NUMERICAL SIMULATION AND EXPERIMENTAL STUDY OF FLOW FIELD IN CLOSED AND OPEN WIND TUNNEL TEST SECTION[J]. Engineering Mechanics, 2022, 39(S): 164-172. doi: 10.6052/j.issn.1000-4750.2021.05.S032
Citation: LIAO Peng, FU Ji-yang, MA Wen-yong, HE Yun-cheng. NUMERICAL SIMULATION AND EXPERIMENTAL STUDY OF FLOW FIELD IN CLOSED AND OPEN WIND TUNNEL TEST SECTION[J]. Engineering Mechanics, 2022, 39(S): 164-172. doi: 10.6052/j.issn.1000-4750.2021.05.S032

风洞试验段闭口与开口模式下流场的数值模拟与实验研究

doi: 10.6052/j.issn.1000-4750.2021.05.S032
基金项目: 国家杰出青年科学基金项目(51925802);河北省风工程和风能利用工程技术创新中心(石家庄铁道大学)开放课题项目(ICWEHB202001)
详细信息
    作者简介:

    廖 鹏(1995−),男,广东人,硕士,主要从事结构风工程研究(E-mail: 2111916022@e.gzhu.edu.cn)

    傅继阳(1976−),男,湖北人,教授,博士,副校长,主要从事结构风工程研究(E-mail: jiyangfu@gzhu.edu.cn)

    马文勇(1981−),男,陕西人,教授,博士,主要从事结构风工程研究(E-mail: mawenyong@126.com)

    通讯作者:

    何运成(1984−),男,河北人,副教授,博士,主要从事结构风工程研究(E-mail: yuncheng@gzhu.edu.cn)

  • 中图分类号: V211.74

NUMERICAL SIMULATION AND EXPERIMENTAL STUDY OF FLOW FIELD IN CLOSED AND OPEN WIND TUNNEL TEST SECTION

  • 摘要: 为了满足不同空气动力学模型安装的需求,风洞设计成一种试验段可拆卸构造,原来闭口式小型风洞进行试验段拆除可成为开口式风洞,为了提高开口式风洞的流场品质,设计一套包括收集器和小收缩段的整流装置。使用CFD方法对不同类型的风洞进行流场三维数值模拟,湍流模型采用 SST k-ω湍流模型,同时,采用眼镜蛇探针对实际的不同类型的风洞流场进行测试实验,主要研究风洞的速度均匀性和湍流强度的变化趋势,对风洞的流场品质进行评估和对比。实验和数值仿真结果证明:模拟的速度和湍流强度剖面与实测具有良好一致性,在风洞试验段平均风速在一定测试风速下,闭口式风洞具备低湍流强度和高流动均匀度的特点的流场品质,其中心区域湍流强度在0.3%以下。此外,证明了这套整流装置的设计可提高了开口式风洞的流场品质,在风洞试验段风速最大速度50%左右时,其中心区域湍流度在0.5%以下,边界层厚度减少到50 mm。这些结论将对小型风洞装置的设计、改进奠定了基础。
  • 图  1  整体风洞设计模型

    Figure  1.  The overall wind tunnel design model

    图  2  整流装置

    Figure  2.  Wind tunnel rectification device

    图  3  风洞模型计算域

    Figure  3.  Part of the model grid diagram

    图  4  部分风洞模型网格示意图

    Figure  4.  Part of the model grid diagram

    图  5  眼镜蛇探针安装与细节

    Figure  5.  Corba probe installation and details

    图  6  测试点位置

    Figure  6.  Test point location

    图  7  截面X=0.50 m无量纲速度和湍流强度

    Figure  7.  Dimensionless mean velocity and turbulence intensity of the flow at the X=0.50 m test section

    图  8  截面X=0.75 m无量纲速度和湍流强度

    Figure  8.  Dimensionless mean velocity and turbulence intensity of the flow at the X=0.75 m test section

    图  9  截面X=0.10 m无量纲速度和湍流强度

    Figure  9.  Dimensionless mean velocity and turbulence intensity of the flow at the X=0.10 m test section

    图  10  Z=0垂直截面的速度云图(工况S1)

    Figure  10.  Contours of Z=0 vertical section velocity magnitude (working condition S1)

    图  11  截面X=0.50 m无量纲速度和湍流强度

    Figure  11.  Dimensionless mean velocity and turbulence intensity of the flow at the X=0.50 m test section

    图  12  Z=0垂直截面的速度云图(工况S2)

    Figure  12.  Contours of Z=0 vertical section velocity magnitude (working condition S2)

    图  13  截面X=0.50 m无量纲速度和湍流强度

    Figure  13.  Dimensionless mean velocity and turbulence intensity of the flow at the X=0.50 m test section

    图  14  Z=0垂直截面的速度云图(工况S3)

    Figure  14.  Contours of Z=0 vertical section velocity magnitude (working condition S3)

    图  15  Z=0垂直截面的速度云图(工况S4)

    Figure  15.  Contours of Z=0 vertical section velocity magnitude (working condition S4)

    图  16  Z=0垂直截面的速度云图(工况S5)

    Figure  16.  Contours of Z=0 vertical section velocity magnitude (working condition S5)

    表  1  各类风洞入口边界条件

    Table  1.   Various wind tunnel entrance boundary conditions

    工况风洞类型速度/(m/s)湍流强度/(%)
    S1完整风洞2.274.6
    S2拆除试验段2.0110.3
    S3拆除试验段安装收集器2.1210.5
    S4拆除试验段安装小收缩段1.9816.0
    S5拆除试验段安装整套整流装置2.1115.3
    下载: 导出CSV
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出版历程
  • 收稿日期:  2021-05-30
  • 修回日期:  2022-03-22
  • 网络出版日期:  2022-05-09
  • 刊出日期:  2022-06-06

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