Volume 36 Issue 3
Mar.  2021
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WANG Zhihui, MA Chaochen, ZHU Fei. Influence of pulsating frequencies on characteristic of radial turbine rotor inlet flow[J]. Journal of Aerospace Power, 2021, 36(3): 646-654. doi: 10.13224/j.cnki.jasp.2021.03.020
Citation: WANG Zhihui, MA Chaochen, ZHU Fei. Influence of pulsating frequencies on characteristic of radial turbine rotor inlet flow[J]. Journal of Aerospace Power, 2021, 36(3): 646-654. doi: 10.13224/j.cnki.jasp.2021.03.020

Influence of pulsating frequencies on characteristic of radial turbine rotor inlet flow

doi: 10.13224/j.cnki.jasp.2021.03.020
  • Received Date: 2020-07-01
  • Publish Date: 2021-03-28
  • Detailed understanding of the flow interaction within the complex geometry of turbine stage coupled with the imposed unsteady pressure waves was presented. A fully validated numerical model was established based on ANSYS CFX code. For this purpose, four unsteady simulations of 20, 40, 60 and 80 Hz together with the steady state simulations were conducted. The flow angle distribution in a pulsating cycle and at the circumferential and spanwise positions was analyzed in different pulsating frequency conditions. The results showed that the pulsating frequency mainly affected the inlet incidence angle of rotor at the high pressure side, moreover, the lower the pulse frequency, the greater the negative incident angle of the low pressure side. It was also found that the absolute flow angle distribution at circumferential potion was similar and the relative flow angle fluctuations during the pressure decrements instances was significantly lower as compared with that during pressure increment instances.

     

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  • [1]
    WATSON N,JANOTA M S.Turbocharging the internal combustion engine[M].London:The Macmillan Press,1982.
    [2]
    JAPIKSE D,BAINES N C.Introduction to turbomachinery[M].Oxford,UK:Oxford University Press,1994.
    [3]
    KARAMANIS N,MARTINEZ-BOTAS R F,SU C C.Mixed flow turbines:inlet and exit flow under steady and pulsating conditions[J].Journal of Turbomachinery,2000,123(2):359-371.
    [4]
    KARAMANIS N,MARTINEZ-BOTAS R F.Mixed-flow turbines for automotive turbochargers:steady and unsteady performance[J].International Journal of Engine Research,2002,3(3):127-138.
    [5]
    YU Liguo,MA Chaochen,SHI Xin,et al.Experimental investigation on vehicular turbocharger turbine characteristics under unsteady flow condition[J].Chinese Internal Combustion Engine Engineering,2010,31(5):36-40.
    [6]
    PALFREYMAN D,MARTINEZ-BOTAS R F.The pulsating flow field in a mixed flow turbocharger turbine:an experimental and computational study[J].Journal of Turbomachinery,2005,127(1):144-155.
    [7]
    COSTALL A,MARTINEZ-BOTAS R F,PALFREYMAN D.Detailed study of pulsating flow performance in a mixed flow turbocharger turbine[R].ASME Paper GT2005-68828,2005.
    [8]
    YANG Mingyang,DENG Kangyao,MARTINES-BOTAS R,et al.An investigation on unsteadiness of a mixed-flow turbine under pulsating conditions[J].Energy Conversion and Management,2016,110:51-58.
    [9]
    PADZILLAH M H,RAJOO S,MARTINEZ-BOTAS R F.A detailed comparison on the influence of flow unsteadiness between the vaned and vaneless mixed-flow turbocharger turbine[J].Journal of Engineering for Gas Turbines and Power,2018,140(4):042601.1-042601.15.
    [10]
    LEE S P,REZK A,JUPP M L.The influence of pulse shape on the performance of a mixed flow turbine for turbocharger applications[J].International Journal of Mechanical Engineering and Robotics Research,2018,7(2):136-142.
    [11]
    LEE S P,JUPP M L,BARRANS S M,et al.Analysis of leading edge flow characteristics in a mixed flow turbine under pulsating flows[J].Proceedings of the Institution of Mechanical Engineers,2019,233(1):78-95.
    [12]
    HU Chenxing,YANG Ce,SHI Xin,et al.Investigation of rotating stall in radial vaneless diffusers with asymmetric inflow[J].Aerospace Science and Technology,2020,96:105546.1-105546.13.
    [13]
    吉冰,李军,王志多.脉动来流对涡轮非定常气动性能影响机理[J].航空动力学报,2020,35(2):191-202. JI Bing,LI Jun,WANG Zhiduo.Effect mechanism of pulsating flow on unsteady aerodynamic performance of turbine[J].Journal of Aerospace Power,2020,35(2):191-202.(in Chinese)
    [14]
    周杨,张扬,苏欣荣,等.进口旋流周向位置对高压涡进口导叶气动特性的影响[J].航空动力学报,2018,33(2):402-410. ZHOU Yang,ZHANG Yang,SU Xinrong,et al.Effect of pitchwise position of inlet swirl on aerodynamic characteristics of high-pressure turbine IGV[J].Journal of Aerospace Power,2018,33(2):402-410.(in Chinese)
    [15]
    DALE A,WATSON N.Vaneless radial turbocharger turbine performance[C]// Proceedings of the 3rd IMechE Conference on Turbocharging and Turbochargers.London:Mechanical Engineering Publications Limited,1986:65-76.
    [16]
    QI Mingxu,LEI Xinguo,WANG Zhen,et al.Investigation on the flow characteristics of a VNT turbine under pulsating flow conditions[J].Journal of Automobile Engineering,2019,233(2):396-412.
    [17]
    HELLSTRM F.Numerical computations of the unsteady flow in a radial turbine[D].Stockholm:Royal Institute of Technology,2008.
    [18]
    CERDOUN M,GHENAIET A.Unsteady behavior of a twin entry radial turbine under engine like inlet flow conditions[J].Applied Thermal Engineering,2018,130(2):93-111.
    [19]
    WANG Zhihui,MA Chaochen,HUANG Zhi,et al.A novel variable geometry turbine achieved by elastically restrained nozzle guide vanes[J].Journal of Automobile Engineering,2020,234(9):2312-2329.
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