Angle of attack and nose shape of bodies are key factors that asymmetric vortex occurs over slender bodies.
迎角、旋成体的外形，尤其是头部的几何形状是细长前体出现非对称涡的关键因素。
The results show that the performance of optimized fan is improved by lowering the energy loss which caused by the secondary flow vortex, the volute tongue, the wake-jet and the angle of attack.
研究结果表明：通过优化有效降低了因二次流漩涡、风机蜗舌结构、尾流-射流和正冲角等造成的能量损失，提高了离心通风机性能。
The experimental investigation of the effect of winglet on the spatial vortex of slender body at high Angle of attack is presented.
本文介绍了小翼对旋转体空间涡影响机理的实验研究结果。
Image method ideal vortex model is used for the analysis of how ground effect impacts wingtip vortex and airflow downwash angle.
采用镜像法理想涡模型分析了地面效应对翼尖涡位置和气流下洗角的影响；
The frequency of vortex increases with the augment of the casting speed, and decreases with the augment of the immersion depth and nozzle angle.
漩涡的出现频率随拉速的增加而增加，随水口浸入深度的增加而减小，随水口张角的减小而增大；
The result shows that the measured strength of the vortex is not equal to the strength of the impulsive motion of the plate with a small angle of attack.
实验结果表明，由此测得的旋涡强度不同于用小攻角平板起动涡公式计算的起动涡强度。
The effect of starting Angle of wing rock on the vortex behaviour was considerable.
还发现翼摇滚起始角对旋涡特性有较大影响。
When the inclination angle of a side nozzle is 0, 30,45 and 60 degrees, the eddying flow of the bottom hole vortex device will cause rotation at the bottom hole, affecting on the jet from bit nozzles.
侧喷嘴倾斜角度在0度、30度、45度和60度情况下，由于井底涡旋器的旋流作用，导致井底产生旋转，对钻头喷嘴射流产生了影响，以致在45度时出现压力损失最小的情况；
There are two shedding modes along the slender axes when the angle of attack is very high. The Karman vortex shedding region is located in afterbody while the nose vortices region is near the apex.
在迎角很大时细长旋成体背部流场沿轴向通常有两个截然不同的区域，其中卡门涡脱落区域位于后体，而头涡区域靠近旋成体头部。
Result shows that the dip Angle, the towed velocity and reduced velocity are main influence factors to the vortex-induced vibration of a circular cylinder.
结果表明，约化速度、拖缆倾角、拖曳速度等是影响涡激振动的主要因素。
The flow visualization and measurement technology were used to study the flow separation, development of mass vortex and flow control mechanism of triplane at large angle of attack in a water tunnel.
在水洞中研究了三翼面流动分离和三翼面布局飞机大迎角的流动机理。
The intensity of vortex above the hydraulic intakes could be strengthened as the angle between inflow and hydraulic intakes becomes larger.
进水口上方漩涡强度随来流与进水口间夹角的增大而增强。
Results indicated that the vortex behaviour was quite different at the same roll angle between static and dynamic conditions.
结果表明：在相同滚转角下，静态和动态情况下旋涡特性有相当大的差别；
Through experiments, the critical wind speed of the vortex-induced vibration is received. And analyzed effect of the railing and the wind attack angle on the vortex-induced vibration.
通过试验得到了涡激振动的临界风速，并分析了栏杆、风攻角对涡激振动的影响。
A vortex member is arranged on the vortex net board. The vortex member is a spiral twist sheet with a spiral Angle. The axial shape of the spiral twist sheet is circular.
所述旋流构件为一段带螺旋角的螺旋扭片，所述螺旋扭片的轴向形状为圆形。
A vortex member is arranged on the vortex net board. The vortex member is a spiral twist sheet with a spiral Angle. The axial shape of the spiral twist sheet is circular.
所述旋流构件为一段带螺旋角的螺旋扭片，所述螺旋扭片的轴向形状为圆形。
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