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对于尖拱形头部、钝形头部和尖顶椭圆形头部三个不同几何形状的细长体模型进行了大迎角流动显示。给出了随迎角增加细长体背风面空间涡系由对称发展至非对称,以及涡的破裂和涡的脱落等整个过程的水槽颜色液显示的流态照片,观察和分析了不同模型上旋涡破裂的类型及涡破裂对于外界扰动的敏感性,风洞表面油流谱给出了钝头模型头部各种流态细节。
Three different geometry slender body models of cusp head, blunt head and spire elliptical head were displayed at high angle of attack. The fluid flow photos of the flume in the flume of the slender body with symmetric development of vortices in the leeward space and the vortex rupture and vortex shedding are given with the angle of attack. The different models are observed and analyzed The type of vortex rupture and the sensitivity of vortex rupture to external disturbances, the oil flow surface on the surface of the wind tunnel gives the details of the various flow patterns in the head of the blunt nose model.