Comparative investigation on axial flow pump rotors of free vortex and non-free vortex design

被引：0
|
作者：
Vad, János [1 ]
Bencze, Ferenc [1 ]
Benigni, Helmut [2 ]
Glas, Wolfgang [2 ]
Jaberg, Helmut [2 ]
机构：
[1] Department of Fluid Mechanics, Budapest Univ. of Technol. and Econ., H-1521 Budapest, Hungary
[2] Inst. for Hydraulic Fluid Machinery, Technical University of Graz, Graz, Austria
来源：
Periodica Polytechnica Mechanical Engineering | 2002年 / 46卷 / 02期
关键词：
Axial flow turbomachinery - Boundary conditions - Computational fluid dynamics - Computer simulation - Design - Intake systems - Reynolds number - Turbomachine blades - Viscosity of liquids - Vortex flow;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Comparative computational investigation has been carried out on two axial flow pump rotors having identical basic geometrical and flow rate parameters but differing in the design methods. The two rotors were designed for free vortex (FV) and non-free vortex (NFV) operation. The global as well as pitchwise-averaged and pitchwise resolved blade passage flow characteristics were investigated in detail. It has been concluded that NFV design is an effectual method for increase of specific performance but the increased risk of cavitation requires careful blade optimisation. It was found that the design blade circulation must kept constant near the hub in order to diminish the risk of corner stall. Furthermore, it has been anticipated that for the NFV rotor the efficiency drops more intensely with increase of tip clearance and the noise level may be lower than for the FV rotor.
引用
收藏
页码：107 / 116
相关论文
共 50 条
  • [21] Experimental and numerical investigation of tip leakage vortex cavitation in an axial flow pump under design and off-design conditions
    Shen, Xi
    Zhang, Desheng
    Xu, Bin
    Ye, Changliang
    Shi, Weidong
    PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART A-JOURNAL OF POWER AND ENERGY, 2021, 235 (01) : 70 - 80
  • [22] Investigation on the mechanism between vortex and cavitation in an axial waterjet pump
    Xu S.
    Long X.
    Ji B.
    Li G.
    Ji, Bin (jibin@whu.edu.cn), 1600, Editorial Board of Journal of Harbin Engineering (41): : 951 - 957
  • [23] Formation and Evolution Mechanism of Tip Leakage Vortex in Axial Flow Pump and Vortex Cavitation Analysis
    Zhang H.
    Zuo F.
    Zhang D.
    Shi W.
    Zhang, Desheng (zds@ujs.edu.cn), 1600, Chinese Society of Agricultural Machinery (52): : 157 - 167
  • [24] Identification and analysis of the inlet vortex of an axial-flow pump
    Zhang, Wen-peng
    Shi, Li-jian
    Tang, Fang-ping
    Sun, Zhuang-zhuang
    Zhang, Ye
    JOURNAL OF HYDRODYNAMICS, 2022, 34 (02) : 234 - 243
  • [25] Identification and analysis of the inlet vortex of an axial-flow pump
    Wen-peng Zhang
    Li-jian Shi
    Fang-ping Tang
    Zhuang-zhuang Sun
    Ye Zhang
    Journal of Hydrodynamics, 2022, 34 (2) : 234 - 243
  • [26] Effects of an Inlet Vortex on the Performance of an Axial-Flow Pump
    Zhang, Wenpeng
    Tang, Fangping
    Shi, Lijian
    Hu, Qiujin
    Zhou, Ying
    ENERGIES, 2020, 13 (11)
  • [27] Tip clearance and tip vortex cavitation in an axial flow pump
    Laborde, R
    Chantrel, P
    Mory, M
    JOURNAL OF FLUIDS ENGINEERING-TRANSACTIONS OF THE ASME, 1997, 119 (03): : 680 - 685
  • [28] Identification and analysis of the inlet vortex of an axial-flow pump
    Zhang, Wen-peng
    Shi, Li-jian
    Tang, Fang-ping
    Sun, Zhuang-zhuang
    Zhang, Ye
    JOURNAL OF HYDRODYNAMICS, 2020,
  • [29] Use of free vortex pump in a portable turbopump unit
    G. D. Shekun
    Russian Engineering Research, 2007, 27 (8) : 525 - 528
  • [30] Experimental investigation of pressure pulsation induced by the floor-attached vortex in an axial flow pump
    Song, Xijie
    Liu, Chao
    ADVANCES IN MECHANICAL ENGINEERING, 2019, 11 (03)
12345