Influence of Non-Uniform Blade Tip Clearance on the Performance of a Large Axial Flow Fan

CHENG Kai; CHEN Yunrui; MENG Fanjie; LI Jingyin

doi:10.7652/xjtuxb202210018

您当前的位置：

首页 >

文章列表页 >

Influence of Non-Uniform Blade Tip Clearance on the Performance of a Large Axial Flow Fan

更新时间：2025-07-09

- Influence of Non-Uniform Blade Tip Clearance on the Performance of a Large Axial Flow Fan
- Vol. 56, Issue 10, Pages: 180-189(2022)
- 作者机构：
  
  西安交通大学能源与动力工程学院,西安,710049
- 作者简介：
- 基金信息：
- DOI：10.7652/xjtuxb202210018
  CLC： TK431
- Online First：10 October 2022，
  
  Published：2022
- 稿件说明：
移动端阅览
CHENG Kai, CHEN Yunrui, MENG Fanjie, et al. Influence of Non-Uniform Blade Tip Clearance on the Performance of a Large Axial Flow Fan[J]. 2022, 56(10): 180-189.
DOI：

CHENG Kai, CHEN Yunrui, MENG Fanjie, et al. Influence of Non-Uniform Blade Tip Clearance on the Performance of a Large Axial Flow Fan[J]. 2022, 56(10): 180-189. DOI： 10.7652/xjtuxb202210018.

摘要

为了探索叶顶间隙沿周向非均匀变化对大型低压轴流风机性能的影响

以某民用大型低压轴流风机为研究对象开展研究

选择表征轴流风机周向非均匀间隙的两个关键参数——平均间隙水平、非均匀度为影响因素

通过定常、非定常的数值模拟

研究周向非均匀的叶顶间隙对风机外特性的影响

以及对叶顶间隙流动和流场变化的影响机理。结果表明:轴流风机平均间隙、非均匀度的增加均会造成风机效率和静压的下降

但平均间隙的改变对静压的影响明显大于非均匀度变化所产生的影响; 叶顶间隙不均匀

会改变叶顶泄漏的起始位置和发展方向

在间隙较大处

叶顶泄漏不但有带涡核的主泄漏

还包括无涡核的附加泄漏

同时叶顶的泄漏流量会因受到前向叶片泄漏涡的卷吸而周期性地改变。该研究成果对低压轴流风机设计及高效运行具有一定的参考价值。

Abstract

This research was conducted to explore the influence of a non-uniform change of blade tip clearance along the circumferential direction on the performance of a large low-pressure axial flow fan. In this research

a large civil low-pressure axial flow fan was taken as the research object

with two key parameters(namely

the average clearance and the non-uniformity)representing the circumferential non-uniform clearance of the axial flow fan selected as the influencing factors. Steady and unsteady numerical simulations were conducted to research the influence of circumferential non-uniform blade tip clearance on the external characteristics of the fan

and on the blade tip clearance flow and flow filed change. The results show that both the increase in the average clearance and non-uniformity of the axial flow fan led to the decrease of the fan's efficiency and static pressure

and the influence caused by the change of the average clearance is significantly greater than that by non-uniformity. When the clearance is large

blade tip leakage flows include not only the main leakage flow with a vortex core

but also an additional leakage flow without a vortex core. The non-uniform blade tip clearance will change the starting position and development direction of blade tip leakage flow. In addition

the blade tip leakage flow will be subject to a periodic change due to the entrainment of the leakage vortex from its leading blade. This research is helpful in the design and efficient operation of low-pressure axial flow fans.

关键词

Keywords

references

FREEMAN C. Effect of tip clearance flow on compressor stability and engine performance [J]. VKI Lecture Series, 1985, 5: 5.

CORY W. Fans and ventilation: a practical guide [M]. Oxford,UK: Elsevier Science, 2005.

祁明旭, 丰镇平. 透平动叶顶部间隙流的表现形式及其对透平性能的影响 [J]. 西安交通大学学报, 2005, 39(3): 243-246, 265.

QI Mingxu, FENG Zhenping. Representation formation of tip clearance flow and influence on turbine performance [J]. Journal of Xi'an Jiaotong University, 2005, 39(3): 243-246, 265.

MOGHADAM S M A, MEINKE M, SCHRÖDER W. Analysis of tip-leakage flow in an axial fan at varying tip-gap sizes and operating conditions [J]. Computers Fluids, 2019, 183: 107-129.

POGORELOV A, MEINKE M, SCHRÖDER W. Effects of tip-gap width on the flow field in an axial fan [J]. International Journal of Heat and Fluid Flow, 2016, 61: 466-481.

吴艳辉, 楚武利, 张燕峰. 间隙大小对压气机转子间隙泄漏流场的影响 [J]. 西北工业大学学报, 2007, 25(6): 838-842.

WU Yanhui, CHU Wuli, ZHANG Yanfeng. Effects of tip clearance size on tip leakage flow fields in a subsonic compressor rotor [J]. Journal of Northwestern Polytechnical University, 2007, 25(6): 838-842.

高杰, 郑群, 许天帮, 等. 涡轮间隙泄漏涡破碎对损失的影响 [J]. 航空学报, 2014, 35(5): 1257-1264.

GAO Jie, ZHENG Qun, XU Tianbang, et al. Effect of tip leakage vortex breakdown on losses in turbines [J]. Acta Aeronautica et Astronautica Sinica, 2014, 35(5): 1257-1264.

NHO Y C, PARK J S, LEE Y J, et al. Effects of turbine blade tip shape on total pressure loss and secondary flow of a linear turbine cascade [J]. International Journal of Heat and Fluid Flow, 2012, 33(1): 92-100.

TALLMAN J, LAKSHMINARAYANA B. Numerical simulation of tip leakage flows in axial flow turbines, with emphasis on flow physics: part I effect of tip clearance height [J]. Journal of Turbomachinery, 2001, 123(2): 314-323.

LEE S W, MOON H S, LEE S E. Tip gap height effects on flow structure and heat/mass transfer over plane tip of a high-turning turbine rotor blade [J]. International Journal of Heat and Fluid Flow, 2009, 30(2): 198-210.

陆华伟, 杨益, 刘俊, 等. 叶顶间隙影响高负荷扩压叶栅气动性能实验研究 [J]. 工程热物理学报, 2017, 38(3): 509-514.

LU Huawei, YANG Yi, LIU Jun, et al. An experimental investigation on the aerodynamic performance of highly-loaded compressor cascade with different tip clearance [J]. Journal of Engineering Thermophysics, 2017, 38(3): 509-514.

YOU D, WANG Meng, MOIN P, et al. Effects of tip-gap size on the tip-leakage flow in a turbomachinery cascade [J]. Physics of Fluids, 2006, 18(10): 105102.

GAMIL A A A, TEIXEIRA J A, ADDALI A, et al. Demonstration of leakage flow distribution of an axial fan inside the tip clearance gap [C]//55th AIAA Aerospace Sciences Meeting. Palo Alto, CA, USA: AAAI Press, 2017: AIAA 2017-1012.

KHALID S A, KHALSA A S, WAITZ I A, et al. Endwall blockage in axial compressors [C]//ASME 1998 International Gas Turbine and Aeroengine Congress and Exhibition. New York, NY, USA: ASME, 1998: V001T01A047.

HAN Yadong, TAN Lei. Dynamic mode decomposition and reconstruction of tip leakage vortex in a mixed flow pump as turbine at pump mode [J]. Renewable Energy, 2020, 155: 725-734.

HAN Yadong, TAN Lei. Influence of rotating speed on tip leakage vortex in a mixed flow pump as turbine at pump mode [J]. Renewable Energy, 2020, 162: 144-150.

STORACE A F, WISLER D C, SHIN H W, et al. Unsteady flow and whirl-inducing forces in axial-flow compressors: part I experiment [J]. Journal of Turbomachinery, 2001, 123(3): 433-445.

ALFORD J S. Protecting turbomachinery from self-excited rotor whirl [J]. Journal of Engineering for Power, 1965, 87(4): 333-343.

GRAF M B, WONG T S, GREITZER E M, et al. Effects of nonaxisymmetric tip clearance on axial compressor performance and stability [J]. Journal of Turbomachinery, 1998, 120(4): 648-661.

CHEN Yingxiu, HOU Anping, ZHANG Mingming, et al. Effects of nonuniform tip clearance on fan performance and flow field [C]//ASME Turbo Expo 2015: Turbine Technical Conference and Exposition. New York, NY, USA: ASME, 2015: V02AT37A010.

陈颖秀, 侯安平, 张明明, 等. 轴流压气机机匣变形对多排转子流场特性的影响 [J]. 航空学报, 2016, 37(11): 3284-3295.

CHEN Yingxiu, HOU Anping, ZHANG Mingming, et al. Effects of casing deformation on blade rows flow field characteristics in an axial-flow compressor [J]. Acta Aeronautica et Astronautica Sinica, 2016, 37(11): 3284-3295.

MA Hongwei, LI Baihe. Effects of axial non-uniform tip clearances on aerodynamic performance of a transonic axial compressor [J]. Journal of Thermal Science, 2008, 17(4): 331-336.

叶学民, 崔建光, 李春曦. 动叶可调轴流风机叶顶间隙形态的优化研究 [J]. 系统仿真学报, 2018, 30(10): 3939-3948.

YE Xuemin, CUI Jianguang, LI Chunxi. Optimization of tip clearance patterns of variable-pitch axial flow fan [J]. Journal of System Simulation, 2018, 30(10): 3939-3948.

姬田园, 楚武利, 戴雨晨, 等. 叶顶间隙偏差对叶片气动性能影响的不确定性研究 [J/OL]. 推进技术 [2022-04-01]. http://kns.cnki.net/kcms/detail/11.1813.V.20220118. 1437.004.html.

JI Tianyuan, CHU Wuli, DAI Yuchen, et al. Study on the influence of tip clearance deviation uncertainty on blade aerodynamic performance [J/OL]. Journal of Propulsion Technology[2022-04-01]. http://kns.cnki.net/kcms/detail/11.1813.V.20220118.1437. 004.html.

HAO Yue, TAN Lei. Symmetrical and unsymmetrical tip clearances on cavitation performance and radial force of a mixed flow pump as turbine at pump mode [J]. Renewable Energy, 2018, 127: 368-376.

Views

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Study of the Mechanism of Electrostatic Accumulation and Current Density Distribution Characteristics During Liquid Hydrogen Pipeline Transportation

Numerical Simulation of Space Charge Distribution Characteristics of Polyimide Materials under X-Ray Irradiation

Numerical Simulation Study on Geothermal Extraction Characteristics of Supercritical CO2 in Heterogeneous Fractures

Action Mechanism of Heat Transfer between the Working Medium and the Impeller on Aerodynamic Performance and Flow Characteristics of Radial Inflow Turbines with Supercritical Carbon Dioxide

Analysis of the Attached Vortex Model for the Flow Characteristics of Wing Near-Field Wakes

Related Author

SUN Wenhao

LIU Hongbao

WANG Lei

QING Ziyou

LI Zhuolun

MA Yuan

LI Yanzhong

ZHONG Hui

Related Institution

School of Energy and Power Engineering，Xi’an Jiaotong University

Aerospace System Engineering Shanghai

School of Electrical Engineering，Xi’an Jiaotong University

Northwest Institute of Nuclear Technology

Institute of Electronic Engineering，China Academy of Engineering Physics

⁰