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无人直升机主减舱散热性能分析

鲍和云 范永 朱如鹏 陆凤霞 靳广虎

鲍和云, 范永, 朱如鹏, 陆凤霞, 靳广虎. 无人直升机主减舱散热性能分析[J]. 机械科学与技术, 2019, 38(9): 1327-1334. doi: 10.13433/j.cnki.1003-8728.20180315
引用本文: 鲍和云, 范永, 朱如鹏, 陆凤霞, 靳广虎. 无人直升机主减舱散热性能分析[J]. 机械科学与技术, 2019, 38(9): 1327-1334. doi: 10.13433/j.cnki.1003-8728.20180315
Bao Heyun, Fan Yong, Zhu Rupeng, Lu Fengxia, Jin Guanghu. Analysis of Heat Dissipation Performance of Main Reducer Cabin for an Unmanned Helicopter[J]. Mechanical Science and Technology for Aerospace Engineering, 2019, 38(9): 1327-1334. doi: 10.13433/j.cnki.1003-8728.20180315
Citation: Bao Heyun, Fan Yong, Zhu Rupeng, Lu Fengxia, Jin Guanghu. Analysis of Heat Dissipation Performance of Main Reducer Cabin for an Unmanned Helicopter[J]. Mechanical Science and Technology for Aerospace Engineering, 2019, 38(9): 1327-1334. doi: 10.13433/j.cnki.1003-8728.20180315

无人直升机主减舱散热性能分析

doi: 10.13433/j.cnki.1003-8728.20180315
基金项目: 

国家自然科学基金项目 51305196

详细信息
    作者简介:

    鲍和云(1976-), 副教授, 硕士生导师, 研究方向为机械CAD及热仿真分析, baoheyun@nuaa.edu.cn

  • 中图分类号: TG156

Analysis of Heat Dissipation Performance of Main Reducer Cabin for an Unmanned Helicopter

  • 摘要: 主减速器是无人直升机传动系统的重要组成部分,为防止高温影响其工作性能,针对某无人直升机主减速器,建立了主减速器舱三维模型;应用CFD(计算流体动力学)对其前飞状态下的主减速器舱流场及温度场进行了数值仿真,研究其流场和温度场分布,得到了提升主减舱散热效果的方法。结果表明:增大侧排气口能有效抑制侧排气口附近的涡流;调节风扇与主减速器的距离,将圆形导风罩改为方形导风罩加导风圈的形式及调节风扇与散热器之间的距离等方法均可以降低散热器散热的不均匀性,提高散热性能。
  • 图  1  主减速器舱计算域三维模型

    图  2  主减舱网格划分

    图  3  具有温度特征的主减舱空气矢量图

    图  4  Z截面与X截面温度云图

    图  5  Y截面温度云图

    图  6  Z截面上的具有温度特征的空气矢量图

    图  7  Z截面上的具有温度特征的空气矢量图

    图  8  主减舱壁面温度分布云图

    图  9  散热器温度云图

    图  10  导风罩形式

    图  11  散热器温度云图分布

    图  12  散热器温度分布云图

    图  13  风扇与散热器不同距离下的散热器的平均温度

    图  14  通过散热器的平均质量流量

    图  15  散热器温度云图

    表  1  边界条件名称及类型

    边界条件 边界名称 边界类型
    上进气口 Inlet1 Velocity-inlet
    前进气口 Inlet2 Velocity-inlet
    侧排气口 Outlet1 Pressure_outlet
    排气口 Outlet2 Pressure_outlet
    上机匣 shangjixia wall
    中机匣 zhongjixia wall
    下机匣 xiajixia wall
    旋翼轴 xuanyizhou wall
    风扇 fengshan fan
    散热器 sanreqi radiator
    舱壁 cangbi wall
    导风罩 daofengzhao wall
    上进气道 qidao_inlet1 wall
    前进气道 qidao_inlet2 wall
    侧排气道 qidao_outlet1 wall
    排气道 qidao_outlet2 wall
    下载: 导出CSV
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出版历程
  • 收稿日期:  2018-07-02
  • 刊出日期:  2019-09-05

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