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基于等效间隙的机匣安装边泄漏量定量计算方法

艾延廷 刘俊男 田晶 刘玉 赵丹 姚玉东

艾延廷, 刘俊男, 田晶, 等. 基于等效间隙的机匣安装边泄漏量定量计算方法[J]. 航空动力学报, 2024, 39(1):20220153 doi: 10.13224/j.cnki.jasp.20220153
引用本文: 艾延廷, 刘俊男, 田晶, 等. 基于等效间隙的机匣安装边泄漏量定量计算方法[J]. 航空动力学报, 2024, 39(1):20220153 doi: 10.13224/j.cnki.jasp.20220153
AI Yanting, LIU Junnan, TIAN Jing, et al. Quantitative calculation method of the casing flange leakage based on equivalent clearance[J]. Journal of Aerospace Power, 2024, 39(1):20220153 doi: 10.13224/j.cnki.jasp.20220153
Citation: AI Yanting, LIU Junnan, TIAN Jing, et al. Quantitative calculation method of the casing flange leakage based on equivalent clearance[J]. Journal of Aerospace Power, 2024, 39(1):20220153 doi: 10.13224/j.cnki.jasp.20220153

基于等效间隙的机匣安装边泄漏量定量计算方法

doi: 10.13224/j.cnki.jasp.20220153
基金项目: 国家自然科学基金(11702177); 辽宁省自然科学基金(2020-BS-174); 辽宁省教育厅项目(JYT2020019)
详细信息
    作者简介:

    艾延廷(1964-),男,教授、博士生导师,博士,主要从事航空发动机结构强度、噪声方向的研究

  • 中图分类号: V235.11

Quantitative calculation method of the casing flange leakage based on equivalent clearance

  • 摘要:

    结合平行平板流动理论,结合流量因子法和粗糙面接触压力与接触间隙的关系,提出了一种基于等效间隙、能够考虑微观粗糙形貌及受不均匀分布载荷的机匣安装边泄漏量定量计算方法;采用有限元计算方法,研究了内部气体压力和轴向力对机匣安装边气体泄漏量的影响规律;研究表明,随着内部气体压力的增加,泄漏量增大,随着轴向力的增加,泄漏量略微减小;最后将计算结果与泄漏量实验结果进行对比,在内部气体压力和轴向力作用下的泄漏量最大误差分别为3.5%和3.6%,证明了本文计算方法的有效性。

     

  • 图 1  平行平板流动示意图

    Figure 1.  Schematic diagram of parallel flat flow

    图 2  粗糙面接触示意图

    Figure 2.  Rough surface contact schematic

    图 3  等效平行间隙构建示意图

    Figure 3.  Equivalent parallel gap construction schematic

    图 4  机匣安装边模型网格图

    Figure 4.  Grid diagram of casing flange model

    图 5  机匣安装边受力图

    Figure 5.  Force diagram of the casing flange

    图 6  不同内部气体压力下安装边单扇区螺栓连接结构接触压力分布

    Figure 6.  Contact pressure distribution of the single sector bolted structure on the mounting side under different internal gas pressures

    图 7  不同轴向力下安装边单扇区螺栓连接结构接触压力分布

    Figure 7.  Contact pressure distribution of single sector bolted structure on the mounting side under different axial forces

    图 8  不同内部气体压力下安装边单扇区螺栓连接结构接触间隙分布

    Figure 8.  Contact gap distribution of single sector bolted structure on the mounting side under different internal gas pressure

    图 9  不同轴向力下安装边单扇区螺栓连接结构接触间隙分布

    Figure 9.  Contact gap distribution of single sector bolted structure on the mounting side under different axial forces

    图 10  导出泄漏通道数据示意图

    Figure 10.  Schematic diagram of exporting leaked channel data

    图 11  等效泄漏通道模型示意图

    Figure 11.  Schematic diagram of equal leakage channel model

    图 12  实验系统结构示意图

    Figure 12.  Schematic diagram of the structure of the test system

    图 13  实验系统实物图

    Figure 13.  Physical diagram of the test system

    图 14  内部气体压力对总压分布的影响

    Figure 14.  Effect of internal gas pressure on total pressure distribution

    图 15  内部气体压力对流速分布的影响

    Figure 15.  Effect of internal gas pressure on flow rate distribution

    图 16  内部气体压力对泄漏量的影响

    Figure 16.  Effect of internal gas pressure on leakage volume

    图 17  轴向力对总压分布的影响

    Figure 17.  Effect of axial force on total pressure distribution

    图 18  轴向力对流速分布的影响

    Figure 18.  Effect of axial force on flow velocity distribution

    图 19  轴向力对泄漏量的影响

    Figure 19.  Effect of axial force internal gas pressure on leakage volume

    表  1  机匣安装边有限元模型几何参数

    Table  1.   Geometric parameters of finite element model of casing flange mm

    参数数值
    机匣长度100
    螺栓处机匣直径640
    机匣内径740
    机匣外径720
    安装边高度4
    下载: 导出CSV
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  • 收稿日期:  2022-03-25
  • 网络出版日期:  2023-08-30

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