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Volume 36 Issue 12
Dec.  2010
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Journal of Beijing University of Aeronautics and Astronautics  > 2010  >  36(12): 1461-1464,1479.
Wang Xuee, Zhang Hua, Wang Hong, et al. New 3-D separation structure in juncture flows[J]. Journal of Beijing University of Aeronautics and Astronautics, 2010, 36(12): 1461-1464,1479. (in Chinese)
Citation: Wang Xuee, Zhang Hua, Wang Hong, et al. New 3-D separation structure in juncture flows[J]. Journal of Beijing University of Aeronautics and Astronautics, 2010, 36(12): 1461-1464,1479. (in Chinese)
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New 3-D separation structure in juncture flows

  • School of Aeronautic Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

  • Received Date: 17 Oct 2009
  • Publish Date: 30 Dec 2010
    Abstract
  • A computational and particle image velocimetry(PIV) experimental study of three dimensional steady separation structure generated in juncture laminar flows was presented. It confirms the existence of outmost attachment saddle point structure of horseshoe vortex in juncture flows. The outmost streamline doesn’t rise from the plate but attaches to the plate by passing through a space singular point. There also exists an evolvement rule of horseshoe vortex structure from outmost attachment saddle point structure to outmost separation saddle point structure. The evolvement is influenced by the blunt extent of the model, the boundary layer thickness and the Reynolds number. Under curtain boundary layer and the Reynolds number conditions, the horseshoe vortex will change from outmost separation saddle point structure to outmost attachment saddle point structure as the blunt extent of the model becomes smaller. For a same model, the horseshoe vortex will tend to be outmost separation saddle point structure as the boundary layer thickness and the Reynolds number increases, contrarily it will tend to be outmost separation saddle point structure.

     

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  • [1] 张涵信.分离流与漩涡运动的结构与分析[M].北京 :国防工业出版社,2005:5-67 Zhang Hanxin.Journal of experiments in fluid mechanics[M].Beijing:National Defense Industry Press,2005:5-67(in Chinese) [2] Visbal M R.Structure of laminar juncture flows[J].AIAA Journal,1991,29(8) :1273-1282 [3] Chen C L ,Hung C M .Numerical study of juncture flows[J].AIAA Journal,1992,30(7):1800-1807 [4] Hung C M,Chen C L,Sung C H,Computation of saddle point of attachment[J]. AIAA Journal,1992,30(6):1561-1569 [5] 张华,吕志咏.应用PIV研究角区三维分离的附着奇点结构[J].空气动力学学报,2007,25(增刊):37-42 Zhang Hua,Lü Zhiyong.The investigation of attachment saddle point of 3-D separation in juncture flow by PIV[J].Acta Aerodynamica Sinica,2007,25(Supplement1):37-42(in Chinese) [6] Perry A E , Fairlie B D.Critical points in flow patterns[J].Advances in Geophysics,1974,18:299-315 [7] Baker C J.The laminar horseshoe vortex[J].Journal of Fluid Mechanics,1979,95(2):347-367 [8] Khan M J.Dynamics of thejunction vortex[J].AIAA Journal,1995,33(7) :113-122 [9] 张华,吕志咏.后掠翼身交接区流动结构及参数影响研究[J],流体力学实验与测量,2000,14(2):16-20 Zhang Hua,Lü Zhiyong.Experimental investigation of vortex characteristics in swept wing/body junctions[J].Experiments and Measurements in Fluid Mechanics,2000,14(2):16-20(in Chinese) [10] Maskell E C.Flow separation in three dimension[M].London:Ministry of Supply,1955:2655-2673 [11] Wang K C.Separation patterns of boundary layer over an inclined body of revolution[J].AIAA Journal,1972,10(8):1044-1050 [12] Wang K C.Separation of three-dimensional flow[R].TR-76-54C,1976:341-414 [13] Coon M D ,Tobak M.Experimental study of saddle point of attachment in laminar juncture flow[J].AIAA Journal,1995,33(12):2288-2292
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