翼型

And then, after establishing the optimization model in accordance with the principle of optimal design of shape formulas, we could obtain the numerical optimization aerofoil on the basis of NACA0018 master pattern solved by the Fluent console, and discuss the reasons of improvement of power coefficient.

然后按照形函数的优化设计原理，建立了优化模型，用Fluent平台求解，在NACA0018母型基础上得到数值优化翼型，并探讨了能量利用率提高的原因。

Firstly, the airfoil profile was parameterized by Bezier curves and the design space for airfoil family was specified by the full factorial design of experiment method.

基于上述模型对FX 63–167翼型进行优化改进，重点研究风力机翼型在3种运行工况点下的气动优化设计命题及其求解方法。

In order to solve this problem,the cross wing of diamond wing profile and isosceles trapezoid wing surface is designed which is of suitable size and smaller effect on projectile resistance.

因此，设计了外形尺寸合适、影响较小同时又能满足弹丸修正能力要求的菱形翼型等腰梯形翼面。

The cambering apparatus comprises an upper surface flexible skin panel which is supported along its inner edge by a wing spar assembly and along its outermost edge, by an airfoil edge forming structure.

该cambering仪器包括一个灵活的上表面皮肤小组是支持沿其内在优势的一翼SPAR公司大会和沿其最外层的边缘，由一翼型的优势，形成结构。

The secondary gearbox is provided with a free-wheeling clutch, a pinion gear and bevel gears for transmitting the rotary movement of the engine to the counter rotating coaxial vertical shafts each carrying two rotor blades of airfoil cross section fixed by pitch bearing on teetering plates and teetering hinges to form horizontal rotors.

二级变速箱是提供一个自由转运离合器的齿轮和小齿轮锥齿轮传递旋转运动的引擎反旋转同轴竖井每个载有两名旋翼桨叶翼型截面固定音高关系摇摇欲坠板摇摇欲坠铰链，形成横向转子。

There are two basic types of airfoils a lifting and drag type.

有两个基本类型的翼型，解除型和拖动型。

The wake survey cannot be used to measure the drag of stalled airfoil or of airfoils with flaps down.

尾流测量不能用来测量失连状态下的冀型或襟翼偏转后的翼型阻力。

Two numerical analyses of isolated airfoils under different incidences show that the results of computation using the embedded H-grid are in good agreement with experimental data.

本文对两个孤立翼型在不同冲角下的流场进行了数值分析，采用嵌入式H型网格所得的计算结果与实验值相符很好。

A high-speed camera is used to visualize the flow structures,and Laser Doppler Velocity is employed for velocity measurement.The osculations are conducted on the two-dimensional hydrofoil section,based on a single-fluid model of the cavitation:the liquid/vapor mixture is considered as a homogeneous fluid whose eompsition is regulated by mass tranfer equation.The RNG k-ε turbulence model with modified eddy viscosity coefficient is used for computing,and the coefficient is related to the vapor and liquid densities in cavitated regions for simulating the cavitating flow.

实验采用高速录像技术观察了云状空化随时间的结构变化，应用 LDV 测量了云状空化条件下翼型周围的速度分布；采用 N-S 方程和基于空泡动力学方程的空化模型计算了绕水翼云状空化流场，湍流模型采用了 RNG k-ε方程，为了改善空化流动的计算精度，引入了一种与空化区域水汽相密度相关的系数，对湍流涡黏性系数进行了修正。

The osculations are conducted on the two-dimensional hydrofoil section,based on a single-fluid model of the cavitation:the liquid/vapor mixture is considered as a homogeneous fluid whose eompsition is regulated by mass tranfer equation.The RNG k-ε turbulence model with modified eddy viscosity coefficient is used for computing,and the coefficient is related to the vapor and liquid densities in cavitated regions for simulating the cavitating flow.

实验采用高速录像技术观察了云状空化随时间的结构变化，应用 LDV 测量了云状空化条件下翼型周围的速度分布；采用 N-S 方程和基于空泡动力学方程的空化模型计算了绕水翼云状空化流场，湍流模型采用了 RNG k-ε方程，为了改善空化流动的计算精度，引入了一种与空化区域水汽相密度相关的系数，对湍流涡黏性系数进行了修正。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。