Volume 35 Issue 9
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SHEN Xinyao, MAO Junkui, LIU Fangyuan. Flow field characteristics of single round hole pulsed jet based on PIV technology[J]. Journal of Aerospace Power, 2020, 35(9): 1845-1855. doi: 10.13224/j.cnki.jasp.2020.09.006
Citation: SHEN Xinyao, MAO Junkui, LIU Fangyuan. Flow field characteristics of single round hole pulsed jet based on PIV technology[J]. Journal of Aerospace Power, 2020, 35(9): 1845-1855. doi: 10.13224/j.cnki.jasp.2020.09.006
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Flow field characteristics of single round hole pulsed jet based on PIV technology

doi: 10.13224/j.cnki.jasp.2020.09.006

  • Jiangsu Province Key Laboratory of Aerospace Power System,College of Energy and Power Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China

  • Received Date: 2020-02-03
  • Publish Date: 2020-09-28
    Abstract
  • The flow field characteristic structure of steady and pulsed jet impinging on the target plate was investigated. High frequency particle image velocity measurement technology was used to measure a steady jet and a pulsed jet with a frequency of 20 Hz. Besides, the distance between the jet nozzle and the target plate was 6 times the diameter of the nozzle, and the steady jet inlet Reynolds number was 6 000 for both steady and pulsed jet flows. The experiment obtained velocity distribution of the core jet zone, the wall jet zone, and the stagnation zone. The results show that: (1) due to the shear action of the jet, maximum axial fluctuation velocity in the core jet zone of the pulsed jet was nearly three times that of the steady jet. (2) In the stagnation zone, the maximum gradient of the axial velocity of the pulsed jet was approximately twice that of the steady jet, which resulted from the shear action of the jet and the stagnation action of the wall. Furthermore, the maximum fluctuation velocity in the stagnation zone was nearly three times that of the steady jet. (3) The entrainment of the pulsed jet and the propagation of the vortex led to the destruction of the velocity boundary layer in the wall jet region. Compared with the steady jet, the flow field of the pulsed jet increased the energy of the turbulent coherent structure and generated periodic large-scale vortex.

     

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    • References(21)
  • [1]
    VISKANTA R.Heat transfer to impinging isothermal gas and flame jets［J］.Experimental Thermal and Fluid Science,1993,6(2):111-134.
    [2]
    BUNKER R S.Gas turbine heat transfer:ten remaining hot gas path challenges［J］.Journal of Turbomachinery,2007,129(2):193-201.
    [3]
    FREGEAU M,GABR M,PARASCHIVOIU I,et al.Simulation of heat transfer from hot-air jets impinging a three-dimensional concave surface［J］.Journal of Aircraft,2009,46(2):721-726.
    [4]
    FLEISCHER A S,KRAMER K,GOLDSTEIN R J.Dynamics of the vortex structure of a jet impinging on a convex surface［J］.Experimental Thermal and Fluid Science,2001,24(3/4):169-175.
    [5]
    毛军逵,刘震雄,郭文.小间距单孔冲击凸面靶板流场结构实验［J］.航空动力学报,2007,22(10):1598-1603. MAO Junkui,LIU Zhenxiong,GUO Wen.Experimental investigations on round jet impingement on flow structures of convex surface target with narrow space［J］.Journal of Aerospace Power,2007,22(10):1598-1603.(in Chinese)
    [6]
    徐惊雷,徐忠.冲击高度对半封闭紊流冲击射流流场影响的实验研究［J］.实验力学,2000,15(4):466-472. XU Jinglei,XU Zhong.Experimental study on the influence of impact height on the flow field of semi-closed turbulent impinging jet［J］.Journal of Experimental Mechanics,2000,15(4):466-472.(in Chinese)
    [7]
    ADRIAN R J.Twenty years of particle image velocimetry［J］.Experiments in Fluids,2005,39(2):159-169.
    [8]
    熊霏,姚朝晖,郝鹏飞,等.冲击射流的 PIV 实验研究［J］.实验流体力学,2004,18(3):68-72. XIONG Fei,YAO Zhaohui,HAO Pengfei,et al.PIV investigation of impinging jet［J］.Journal of Experiments in Fluid Mechanics,2004,18(3):68-72.(in Chinese)
    [9]
    KALIFA R B,HABLI S,SAD N M,et al.Parametric analysis of a round jet impingement on a heated plate［J］.International Journal of Heat and Fluid Flow,2016,57(11):11-23.
    [10]
    BOVO M,ROJO B,GOLUBEV M.Measurements of a single pulse impinging jet:a CFD reference［C］∥Proceedings of European Physical Journal Web of Conferences.Kutnahora,Czech:EDP Sciences,2014:02010.1-02010.8.
    [11]
    HOFMANN H M,MOVILEANU D L,KIND M,et al.Influence of a pulsation on heat transfer and flow structure in submerged impinging jets［J］.International Journal of Heat and Mass Transfer,2007,50(17/18):3638-3648.
    [12]
    XU P,YU B,QIU S,et al.Turbulent impinging jet heat transfer enhancement due to intermittent pulsation［J］.International Journal of Thermal Sciences,2010,49(7):1247-1252.
    [13]
    吕元伟,张靖周,唐婵,等.脉冲射流冲击平直表面的对流换热实验［J］.航空学报,2018,39(4):119-127. L Yuanwei,ZHANG Jingzhou,TANG Chan,et al.Experiment of convective heat transfer of pulsed jet impingement on a flat surface［J］.Acta Aeronautica et Astronautica Sinica,2018,39(4):119-127.(in Chinese)
    [14]
    耿丽萍,周静伟,李文军,等.周期性湍流射流冲击下的传热与流场特征［J］.空气动力学学报,2012,30(4):528-532. GENG Liping,ZHOU Jingwei,LI Wenjun,et al.Characteristics of heat transfer and flow field under periodic turbulent jet impingement［J］.Acta Aerodynamica Sinica,2012,30(4):528-532.(in Chinese)
    [15]
    ZHOU J W,GENG L P,WANG Y G,et al.Experimental and numerical study on flow field and heat transfer characteristics for a periodically unsteady impinging jet［C］∥Proceedings of 2010 14th International Heat Transfer Conference.Washington DC:American Society of Mechanical Engineers,2010:563-569.
    [16]
    GHADI S,ESMAILPOUR K,HOSSEINALIPOUR S M,et al.Experimental study of formation and development of coherent vortical structures in pulsed turbulent impinging jet［J］.Experimental Thermal and Fluid Science,2015,74(12):382-389.
    [17]
    HERWIG H,MIDDELBERG G.The physics of unsteady jet impingement and its heat transfer performance［J］.Acta Mechanica,2008,201(1/2/3/4):171.
    [18]
    HSU C M,JHAN W C,CHANG Y Y.Flow and heat transfer characteristics of a pulsed jet impinging on a flat plate［J］.Heat and Mass Transfer,2020,56(1):143-160.
    [19]
    MLADIN E C,ZUMBRUNNEN D A.Alterations to coherent flow structures and heat transfer due to pulsations in an impinging air-jet［J］.International Journal of Thermal Sciences,2000,39(2):236-248.
    [20]
    COOPER D,JACKSON D C,LAUNDER B E,et al.Impinging jet studies for turbulence model assessment:Ⅰ flow-field experiments［J］.International Journal of Heat and Mass Transfer,1993,36(10):2675-2684.
    [21]
    ZHU Z,NIU J,LI Y.Swirling-strength based large eddy simulation of turbulent flow around single square cylinder at low Reynolds numbers［J］.Applied Mathematics and Mechanics,2014,35(8):959-978.
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