Volume 29 Issue 5
May  2014
Turn off MathJax
Article Contents
YIN Chao, HU Jun, TU Bao-feng, YAN Wei, ZHANG Chen-kai. Numerical investigation of effect of outlet hub geometry on performance of large scale axial fan[J]. Journal of Aerospace Power, 2014, (5): 1170-1176.
Citation: YIN Chao, HU Jun, TU Bao-feng, YAN Wei, ZHANG Chen-kai. Numerical investigation of effect of outlet hub geometry on performance of large scale axial fan[J]. Journal of Aerospace Power, 2014, (5): 1170-1176.

Numerical investigation of effect of outlet hub geometry on performance of large scale axial fan

  • Received Date: 2013-03-14
  • Publish Date: 2014-05-28
  • Four different outlet hub geometries of a large scale axial fan were designed and investigated. CFD methods were used to compare the fan characteristics and analyze the flow field structures in the blade tip and blade root. The results show that variation of outlet hub geometry has little effect on the fan's tip flow structure; there is a large separated flow in the blade root region which occupies 20% of blade height when the fan isn't provided with outlet hub, causing serious loss and decrease of efficiency; with the same blade tip clearance, the fan's efficiency increases when the outlet hub diffuser angle decreases; a matching straight or convergent hub could make the blade root separated vortex move backwards, reduce the separated area to 5% of blade height and increase at least 2 percentage points of the fan efficiency.

     

  • loading
  • [1]
    马宏伟, 蒋浩康, 聂超群.轴流风机转子通道内尖区三维流场[J].工程热物理学报, 1998, 19(1):45-48. MA Hongwei, JIANG Haokang, NIE Chaoqun.Three-dimensional turbulent flow field in the region of an axial-flow fan rotor passage[J].Journal of Engineering Thermophysics, 1998, 19(1):45-48.(in Chinese)
    [2]
    竺晓程, 林万来, 杜朝辉.轴流通风机叶顶区域流动的实验研究[J].上海交通大学学报, 2005, 39(2):177-181. ZHU Xiaocheng, LIN Wanlai, DU Chaohui.Experimental study on the tip leakage flow of an axial fan[J].Journal of Shanghai Jiaotong University, 2005, 39(2):177-181.(in Chinese)
    [3]
    李杨, 欧阳华, 杜朝辉.周向弯曲低压轴流风机叶顶泄漏流动数值研究[J].工程热物理学报, 2005, 26(2):240-243. LI Yang, OUYANG Hua, DU Chaohui.Numerical study of leakage flow of the low pressure aixal flow fans with circumferential skewed blades[J].Journal of Engineering Thermophysics, 2005, 26(2):240-243.(in Chinese)
    [4]
    王军, 姚瑞锋, 刘静, 等.低压轴流风机叶顶间隙对叶尖涡及外部性能的影响研究[J].流体机械, 2011, 39(9):26-30. WANG Jun, YAO Ruifeng, LIU Jing, et al.Influence of tip clearance on external performance and tip leakage vortex of low-pressure axial fan[J].Fluid Machinery, 2011, 39(9):26-30.(in Chinese)
    [5]
    李景银, 陈魏巍, 吕峰.带有前后导叶的新型可逆轴流风机数值研究[J].机械工程学报, 2010, 46(2):139-144. LI Jingyin, CHEN Weiwei, LÜ Feng.Numerical investigation on a new type of fully reversible axial fan with two blade rows on both sides of the rotor[J].Journal of Mechanical Engineering, 2010, 46(2):139-144.(in Chinese)
    [6]
    叶学民, 李俊, 王松岭, 等.带后导叶轴流式通风机内流特征的数值模拟[J].热能动力工程, 2009, 24(2):163-166. YE Xuemin, LI Jun, WANG Songling, et al.Numerical simulation of the inner flow characteristics of an axial fan with rear guide vanes[J].Journal of Engineering for Thermal Energy and Power, 2009, 24(2):163-166.(in Chinese)
    [7]
    刘飞, 吴克启.大型轴流风机来流条件对内流影响的数值分析[J].工程热物理学报, 2006, 27(1):145-148. LIU Fei, WU Keqi.Numerical analysis of internal flow effect from inlet flow conditions in large axial fan[J].Journal of Engineering Thermophysics, 2006, 27(1):145-148.(in Chinese)
    [8]
    李景银, 黄靓, 吕峰.带有进气箱的轴流风机性能变化数值分析[J].工程热物理学报, 2007, 28(1):161-164. LI Jingyin, HUANG Liang, LÜ Feng.Numerical studies of the effect of an inlet box on the performance of an axial flow fan[J].Journal of Engineering Thermophysics, 2007, 28(1):161-164.(in Chinese)
    [9]
    张夏, 楚武利, 邓文剑, 等.轴流风机中支板通道的流动分析与改进[J].航空动力学报, 2006, 21(6):1048-1052. ZHANG Xia, CHU Wuli, DENG Wenjian, et al.Flow analysis and the improvement of axial fan support strut[J].Journal of Aerospace Power, 2006, 21(6):1048-1052.(in Chinese)
    [10]
    杨春, 李秋实, 袁巍, 等.风机结构形式对其性能影响的数值与实验研究[J].航空动力学报, 2005, 20(3):512-517. YANG Chun, LI Qiushi, YUAN Wei, et al.Numerical and experimental investigation of the fan structure effects on performance[J].Journal of Aerospace Power, 2005, 20(3):512-517.(in Chinese)
    [11]
    舒士甄.叶轮机械原理[M].北京:清华大学出版社, 1991.
    [12]
    陈海生, 谭春青, 康顺, 等.轮毂间隙对轴流风机性能和流场影响的数值与实验研究[J].流体机械, 2006, 34(2):1-6. CHEN Haisheng, TAN Chunqing, KANG Shun, et al.Numerical and experimental study on effects of hub leakage on performance and flow field of axial fan[J].Fluid Machinery, 2006, 34(2):1-6.(in Chinese)
    [13]
    张玉成, 仪登利, 冯殿义, 等.通风机设计与选型[M].北京:化学工业出版社, 2011.
    [14]
    乔清华, 钟芳源, 杨波.轴流风机的进口径向畸变研究[J].航空动力学报, 2009, 24(5):1114-1121. QIAO Qinghua, ZHONG Fangyuan, YANG Bo.Investigation on the inlet radial distortion of axial-flow fan[J].Journal of Aerospace Power, 2009, 24(5):1114-1121.(in Chinese)
    [15]
    毛军, 杨立国, 郗艳红.大型轴流风机叶片的气动弹性数值分析研究[J].机械工程学报, 2009, 45(11):133-139. MAO Jun, YANG Liguo, XI Yanhong.Numeric analysis of on the pneumatic elasticity of large axial-flow fan blade[J].Journal of Mechanical Engineering, 2009, 45(11):133-139.(in Chinese)
  • 加载中

Catalog

    通讯作者: 陈斌, bchen63@163.com
    • 1. 

      沈阳化工大学材料科学与工程学院 沈阳 110142

    1. 本站搜索
    2. 百度学术搜索
    3. 万方数据库搜索
    4. CNKI搜索

    Article Metrics

    Article views (1312) PDF downloads(853) Cited by()
    Proportional views
    Related

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return