Laser Doppler Velocimetry Test of Flow Characteristics in Draft Tube of Model Pump Turbine

被引：6
作者：
Deng, Wanquan [1 ]
Li, Zhen [1 ]
Ji, Lei [1 ]
Shang, Linmin [1 ]
Liu, Demin [2 ]
Liu, Xiaobing [1 ]
机构：
[1] Xihua Univ, Key Lab Fluid & Power Machinery, Minist Educ, Chengdu 610039, Peoples R China
[2] Res & Testing Ctr Dongfang Elect Machinery, Deyang 618000, Peoples R China
来源：
PROCESSES | 2022年 / 10卷 / 07期
基金：
国家重点研发计划;
关键词：
laser Doppler velocimetry; pump turbine; pressure pulsation; vortex rope; NUMERICAL-SIMULATION; PRESSURE FLUCTUATION;
D O I：
10.3390/pr10071323
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
For Francis pump turbines, the pressure pulsation characteristics of the draft tube are some of the key concerns during the operation of the units. The pressure pulsation characteristics of the draft tube are directly related to the draft tube spiral cavitating vortex rope. In this paper, the velocity distribution in the draft tube of a Francis pump turbine is tested by means of laser Doppler velocimetry. The velocity pulsation was found to be directly related to the pressure pulsation, while the velocity pulsation was also influenced by the cavitation coefficient. The main frequency of the velocity pulsation was close to the main frequency of the pressure pulsation and became larger as the cavitation factor increased.
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页数：15
相关论文
共 28 条
  • [1] [Anonymous], 2014, IOP C SER EARTH ENV, DOI DOI 10.1088/1755-1315/22/3/032051
  • [2] [Anonymous], 2009, P 3 IAHR INT M WORKI
  • [3] Preliminary Measurements of the Radial Velocity in the Francis-99 Draft Tube Cone
    Bergan, Carl
    Amiri, Kaveh
    Cervantes, Michel J.
    Dahlhaug, Ole G.
    [J]. FRANCIS-99 WORKSHOP 1: STEADY OPERATION OF FRANCIS TURBINES, 2015, 579
  • [4] Stability Analysis of Vaneless Space in High-Head Pump-Turbine under Turbine Mode: Computational Fluid Dynamics Simulation and Particle Imaging Velocimetry Measurement
    Deng, Wanquan
    Xu, Lianchen
    Li, Zhen
    Tang, Wen
    Wang, Xiaolong
    Shang, Linmin
    Liu, Demin
    Liu, Xiaobing
    [J]. MACHINES, 2022, 10 (02)
  • [5] Dynamic mode decomposition to classify cavitating flow regimes induced by thermodynamic effects
    Ge, Mingming
    Manikkam, Pratulya
    Ghossein, Joe
    Subramanian, Roshan Kumar
    Coutier-Delgosha, Olivier
    Zhang, Guangjian
    [J]. ENERGY, 2022, 254
  • [6] Intensity and regimes changing of hydrodynamic cavitation considering temperature effects
    Ge, Mingming
    Zhang, Guangjian
    Petkovsek, Martin
    Long, Kunpeng
    Coutier-Delgosha, Olivier
    [J]. JOURNAL OF CLEANER PRODUCTION, 2022, 338
  • [7] Combined suppression effects on hydrodynamic cavitation performance in Venturi-type reactor for process intensification
    Ge, Mingming
    Sun, Chuanyu
    Zhang, Guangjian
    Coutier-Delgosha, Olivier
    Fan, Dixia
    [J]. ULTRASONICS SONOCHEMISTRY, 2022, 86
  • [8] Cavitation dynamics and thermodynamic effects at elevated temperatures in a small Venturi channel
    Ge, Mingming
    Petkovsek, Martin
    Zhang, Guangjian
    Jacobs, Drew
    Coutier-Delgosha, Olivier
    [J]. INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 2021, 170 (170)
  • [9] Gentner C, 2012, P 26 IAHR S HYDRAULI
  • [10] Pressure fluctuation propagation of a pump turbine at pump mode under low head condition
    Guo Lei
    Liu JinTao
    Wang LeQin
    Qin DaQing
    Wei XianZhu
    [J]. SCIENCE CHINA-TECHNOLOGICAL SCIENCES, 2014, 57 (04) : 811 - 818
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