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带螺旋静叶诱导轮的气蚀性能

李欣 李家文 王珏 刘中祥

李欣, 李家文, 王珏, 等 . 带螺旋静叶诱导轮的气蚀性能[J]. 北京航空航天大学学报, 2016, 42(12): 2654-2661. doi: 10.13700/j.bh.1001-5965.2015.0818
引用本文: 李欣, 李家文, 王珏, 等 . 带螺旋静叶诱导轮的气蚀性能[J]. 北京航空航天大学学报, 2016, 42(12): 2654-2661. doi: 10.13700/j.bh.1001-5965.2015.0818
LI Xin, LI Jiawen, WANG Jue, et al. Cavitation performance of inducer with helical static blades[J]. Journal of Beijing University of Aeronautics and Astronautics, 2016, 42(12): 2654-2661. doi: 10.13700/j.bh.1001-5965.2015.0818(in Chinese)
Citation: LI Xin, LI Jiawen, WANG Jue, et al. Cavitation performance of inducer with helical static blades[J]. Journal of Beijing University of Aeronautics and Astronautics, 2016, 42(12): 2654-2661. doi: 10.13700/j.bh.1001-5965.2015.0818(in Chinese)

带螺旋静叶诱导轮的气蚀性能

doi: 10.13700/j.bh.1001-5965.2015.0818
基金项目: 高超声速冲压发动机技术重点实验室资助项目
详细信息
    作者简介:

    李欣, 男, 博士研究生。主要研究方向:液体火箭发动机涡轮泵。Tel.:010-82338117, E-mail:lixin45@buaa.edu.cn

    通讯作者:

    李家文, 男, 博士, 副教授, 硕士生导师。主要研究方向:液体火箭发动机。Tel.:010-82338529, E-mail:lijiawen@buaa.edu.cn

  • 中图分类号: V434+.212;TH311

Cavitation performance of inducer with helical static blades

Funds: Science and Technology on Scramjet Laboratory
More Information
  • 摘要:

    为了分析带螺旋静叶诱导轮的内部流动规律,利用计算流体力学(CFD)方法对带螺旋静叶诱导轮进行了仿真计算,研究了其扬程特性和气蚀性能。结果显示,安装螺旋静叶后,使诱导轮的扬程得到很大提升,但是因为螺旋静叶流道中回流较强,增大了回流损失,导致效率下降。随着诱导轮入口压力降低,带螺旋静叶诱导轮的气蚀区域受离心力作用,沿径向发展,由于堵塞螺旋静叶流道,推迟了诱导轮流道的堵塞时间,从而使诱导轮的气蚀性能得到改善。

     

  • 图 1  带螺旋静叶诱导轮结构

    Figure 1.  Structure of inducer with helical static blades

    图 2  带螺旋静叶诱导轮平面展开图

    Figure 2.  Planar cascade for inducer with helical static blades

    图 3  计算区域及网格

    Figure 3.  Computed area and calculated grids

    图 4  诱导轮数值计算与实验曲线对比

    Figure 4.  Comparison of numerical calculation and experimental curves of inducer

    图 5  诱导轮吸力面静压对比

    Figure 5.  Comparison of static pressure on suction blade of inducer

    图 6  诱导轮压力面静压对比

    Figure 6.  Comparison of static pressure on pressure blade of inducer

    图 7  诱导轮子午面轴向速度分布和流线

    Figure 7.  Axial velocity distribution and streamline on meridional plane of inducer

    图 8  螺旋静叶流道内的速度矢量

    Figure 8.  Velocity vector in helical static blade channel

    图 9  诱导轮扭矩对比图

    Figure 9.  Comparison of torque for inducer

    图 10  NPSH=5.70 m时不同网格数预测的诱导轮入口的静压分布和气穴分布(fv=10%)

    Figure 10.  Static pressure and cavitation distribution of inducer inlet calculated by different mesh numbers at NPSH=5.70 m (fv=10%)

    图 11  诱导轮气蚀性能对比

    Figure 11.  Comparison of cavitation performance of inducer

    图 12  原诱导轮流道内的气穴分布(fv=10%)

    Figure 12.  Cavitation distribution in original inducer channel (fv=10%)

    图 13  带螺旋静叶诱导轮流道内的气穴分布(fv=10%)

    Figure 13.  Cavitation distribution in inducer channel with helical static blades (fv=10%)

    图 14  带螺旋静叶诱导轮入口fv分布

    Figure 14.  fv distribution at inlet of inducer with helical static blades

    表  1  诱导轮主要参数

    Table  1.   Main parameters of inducer

    参数 外径/mm 叶片数 螺距/mm 轮毂直径/mm
    数值 188.6 3 160 89.8
    下载: 导出CSV

    表  2  螺旋静叶主要参数

    Table  2.   Main parameters of helical static blades

    参数 内径/mm 叶片数 螺距/mm 外径/mm
    数值 192.6 3 160 240
    下载: 导出CSV

    表  3  NPSH=5.70 m时不同网格数预测的诱导轮扬程

    Table  3.   Head of inducer calculated by different mesh numbers at NPSH=5.70 m

    网格数/万 131 178 200
    扬程/m 7.01 6.74 6.73
    下载: 导出CSV
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出版历程
  • 收稿日期:  2015-12-17
  • 录用日期:  2016-03-25
  • 网络出版日期:  2017-12-20

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