这些涡流限定了滑流并产生诱导速度。
These vortices define a slipstream and generate induced velocities.
在诱导速度计算中引入了非奇异光滑参数。
The desingularization smoothing parameter is introduced in calculating the induced velocity on trailing vortex surface.
诱导速度在桨盘处的分布采用广义涡流理论所导的公式。
The nonuniform distribution of induced velocity on the rotor disk derived from the generalized vortex theory is taken into account.
旋翼桨盘处的诱导速度分布采用自前向后直线增大的形式。
The distribution of induced velocity at the rotor is assumed linearly variable over the disk.
检验了计算点涡诱导速度公式中涡团半径对计算结果的影响。
The effect of vortex blob radius on forces is also examined.
无人直升机操纵响应特性研究的关键是有准确的旋翼诱导速度模型。
The key to investigate control response characteristics of unmanned helicopter is to determine the correct induced velocity model.
尾涡畸变引起的诱导速度变化比机身直接在桨盘处诱导速度大得多。
The variation of the induced velocity distribution at the rotor plane caused by the fuselage through distorting the rotor near-wake is much larger than that induced by the fuselage directly.
在机身影响下，旋翼近场尾涡形状发生畸变，从而改变桨盘处的诱导速度分布。
The results show that the rotor near-wake is distorted because of the flow field of the fuselage, resulting in large variation on the induced velocity distribution at the rotor plane.
诱导速度在桨盘处的分布则采用王氏固定涡系涡流理论所导出的诱导速度非均布公式。
The nonuniform distribution of induced velocity on the rotor disk which is derived from the wang's generalized fix vortex theory is taken into account.
建立了旋翼升力线模型和广义尾迹模型，在计算角迹涡线诱导速度时，采用了快速收效方法。
Both lift line model and generalized wake model are founded in this paper. A method is given for calculating induced velocities by a wake vortex line which results in a rapid convergence.
本文用简化的自由涡模型研究旋翼近场尾涡系在机身影响下的畸变及其产生的诱导速度交化。
The effect of helicopter fuselage on its rotor is studied using a simplified free-wake model.
特别是在挥舞系数的表达式中，考虑了诱导速度的变化，但直接与桨叶参数和飞行参数有联系。
In particular, expressions of flapping coefficients are derived, including the effect of variable induced velocity distribution but in terms of blade parameters and flight parameters only.
建立了二维浅水流动的旋涡诱导速度公式，在已知旋涡场和胀量场时，由该表达式可确定流动速度场。
A formula is deduced for the velocity induced by the vortices in two-dimensional shallow water flows and it is used to correct the Biot-Savart law.
应用自由尾迹方法和旋翼配平模型，建立了一个悬停和前飞状态旋翼在导弹发射线上的诱导速度计算模型。
Based on the rotor free-wake model and the rotor trim model, an analytical method is developed for the prediction of helicopter rotor induced velocities on missile trajectory.
本文从旋翼的广义经典涡流理论出发，通过环量对诱导速度的贡献的简化处理，推导出旋翼诱导速度的二阶分布。
In this paper, firstly, relations of first two harmonic induced velocities to the lower and same-order harmonic circulations are obtained from the generalized classical vortex theory of the rotor.
主旋翼是直升机建模的关键，详细讨论了与其相关的翼型气动力模型、 诱导速度模型和挥舞运动模型的建模方法。
Main rotor is the key part of helicopter modeling, the associated modeling methods of aerofoil aerodynamic loads, rotor inflow dynamics and blade flap motion are discussed in detail.
令板面处的法向诱导速度与滑行板由纵摇和升沉运动所产生的法向速度相等，便得到求解未知压力分布的积分方程序。
By equating the normal induction velocity on the planing plate to its normal velocity of pitching and heaving motions, obtained the integral equations of the unknown pressure distribution.
实验结果表明，等离子体激励作用主要集中在近壁面附近；激励电压与诱导速度近似为线性关系，激励频率对诱导速度的影响不大。
Experiment results showed that the relation between exciting voltage and induced velocity magnitude was linear, but the influence of supply frequency was not evident.
在本文中作者考虑了各种因素，推导出铰接式刚性旋翼的动力学广义方程。这些因素是：诱导速度的二阶谐量与挥午系数的二阶谐量；
In this paper, the general dynamic equations of the hinged stiff rotor blades are derived for a lot of factors, such as the second-harmonic of induced velocity;
本文用一简化自由涡模型模拟旋翼尾涡系，用一简单涡模拟地面涡，对近地低速飞行时旋翼尾涡系的畸变及其引起的诱导速度变化作了研究。
The vortex wake and its induced velocity of a helicopter rotor operating near the ground at low forward speeds have been studied using a simplified free wake-ground vortex model.
它具有诱导过程快、温度维持精确和复温速度容易控制等特点。
It has the characteristics of fast induced, precise temperature maintenance and easy-control rewarming speed.
所用硝酸铵的颗粒类型，对于控制反应速度，特别是诱导期，是很重要的。
The type of granulation of the ammonium nitrate used is significant in controlling the rate of reaction, and especially the induction time.
结论：词语联想、句子重建、近意词辨别任务可诱导脑血流速度的左侧偏侧化。
Conclusion Word generation, sentence reconstruction and synonymy identification can induce a significant left hemishere lateralization of cerebral blood flow velocity.
在飞行器所在流场的下游一垂直于来流速度的截面上进行积分计算，得到升力、诱导阻力、激波阻力和总阻力。
By doing integral computation on the wake surface that is down from the aircraft and vertical to the velocity of far field, it can get the lift, induced drag, wave drag and the total drag.
本文采用LIF(激光诱导荧光)流动显示和PIV(粒子图像速度场仪)测量对横流冲击射流的尾迹涡结构进行了实验研究。
The wake vortices of an impinging jet in crossflow were studied experimentally by means of laser-induced fluorescence (LIF) flow visualization and particle image velocimetry (PIV) measurement.
结论：依托米酯，异丙酚均可作为喉颈联合手术经气管切开插管麻醉诱导剂，但应掌握静注剂量与速度。
Conclusion: Etomidate and propofol are suitable for induction in the intubation in tracheotomy with controlled dosage and infusion speed.
旋翼尾流的作用通过自由尾流分析来求解局部的诱导下洗速度以修正翼型攻角。
Rotor wake effects are modeled in the form of a correction applied to the angle of attack along the blades. This correction is obtained by computing the local induced downwash with free wake analysis.
旋翼尾流的作用通过自由尾流分析来求解局部的诱导下洗速度以修正翼型攻角。
Rotor wake effects are modeled in the form of a correction applied to the angle of attack along the blades. This correction is obtained by computing the local induced downwash with free wake analysis.
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