本文简要介绍近年来国外进行非定常涡升力实验研究的一些情况，以供开展有关工作的参考。
There is interesting progress abroad in the experimental studies on unsteady vorteX-lift. This paper presents some encouraging information for references.
而交流电所产生的电磁力对于绕流涡街、升力、阻力的控制作用，则与所使用的频率有关。
The control effect of electromagnetic force on cylinder wake, lift force and drag force , which was caused by alternating current, is related to its frequency.
应用升力面理论涡格法和面元法，建立了拖式吊舱推进器非定常水动力性能的数值计算方法。
Based on potential flow theory, a numerical method is proposed for predicting the steady and unsteady hydrodynamic performances of puller type podded propulsors.
文章重点研究了较高振幅振动柱的锁定现象、波动升力与柱位移之间的相位变化，讨论了方柱涡激振荡、驰振和气动稳定性问题。
This study aims at investigating the lock-in phenomenon, fluctuating lift and the phase shift between fluctuating lift and displacement of the oscillating cylinder.
在颤振特性分析中所需要的广义气动力是根据亚音速非定常升力面理论，采用马蹄涡—振荡压力偶极子格网法计算的。
The generalized aerodynamic force required in analysis is calculated by using horse shoe vortex— vibrational pressure doublet grid method, based on theory of subsonic unsteady lifting plane.
发现单纯改变涡襟翼的形式和参数能提高减阻效果，但不能改变小迎角下升力过小的现象。
It is found that the variation of planforms and geometrical parameters can effect only the drag reduction but little to the low lift in low angle of attack condition.
基于桨叶二阶升力线理论和旋翼自由尾迹模型，本文在第三章建立了一个适合于直升机旋翼尾迹结构及桨-涡干扰气动特性分析的方法和模型。
In Chapter 3, based upon the blade second-order lifting-line model and rotor free-wake model, an analytical method is developed for predicting the rotor wake structure and BVI airload.
螺旋桨采用升力面理论涡格法、吊舱采用面元法分析计算，二者的相互干扰通过叠代计算来处理。
The propeller blades are calculated by a vortex lattice method, while the pod including its strut by a boundary element method for non-lifting bodies.
对螺旋桨与舵附推力鳍分别采用升力面法和非线性涡格法计算。
Lifting surface method and non-linear vortex lattice method were used for the calculation of propeller and rudder with additional thrust fins respectively.
采用升力面涡格法对系列大毂径MAU型螺旋桨进行敞水性能计算，运用理论算法扩充了MAU型螺旋桨图谱。
The open water characteristics of a series of large hub-diameter Ratio MAU propellers are calculated by using lift-surface method to expand the chart of MAU-series propeller.
用该方法研究了近地升力面尾涡卷起的地面效应。
The improved vortex lattice method is used to predict the ground effect on wake roll-up behind a lifting surface.
采用基于涡系理论的模型建立刚性圆柱尾迹和预定尾迹模型的升力面法预测程序，对无偏航情况的风力机性能进行了预测。
Based on the vortex theory, lifting surface method is used to establish wind turbine performance prediction model with rigid cylinder wake model, prescribed wake model and free-wake method.
对这种类型的翼型涡发生器(也称为微型涡发生器，或vgs)添加很少的改善方面的最高升力系数(或失速速度)。
On this type of airfoil vortex generators (also called micro-vortex generators, or VGs) add very little improvement with respect to the maximum lift coefficient (or stall speed).
将艇体看作回转体，在轴线上分布离散的点源模拟艇体，用升力面理论的涡环栅格法模拟附体；
The hull is defined as a revolution body. The hull volume effects are represented by a series of point source and sinks distributed on the hull axis.
将艇体看作回转体，在轴线上分布离散的点源模拟艇体，用升力面理论的涡环栅格法模拟附体；
The hull is defined as a revolution body. The hull volume effects are represented by a series of point source and sinks distributed on the hull axis.
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