查询词典 propeller

In this paper, the experimental investigation and theoretical study on reduction of the ducted propeller cavitation noise by air injection are presented.

本文介绍用人工喷入空气的方法降低导管螺旋浆空泡噪声的试验和理论研究。

In this thesis, the stead hydrodynamic performance of ducted propeller in uniform flow is predicted by lifting-surface method and surface panel method.

本文应用基于扰动速度势的面元法和升力面理论的耦合方法，计算导管螺旋桨在均匀流场中的定常水动力性能。

And the above mentioned coefficients can be calculated directly by computer according to the ducted propeller principal particulars.

然后，为了满足全回转式拖轮多工况动态仿真的需要，本文对配备于全回转式拖轮上的导管螺旋桨进行了研究，给出适用于计算机仿真的导管螺旋桨的推力和转矩计算方法。

Wake velocities at the propeller disk plane, other than pressure coefficient and skin friction coefficient, are given, and vortices structures shed from the fairwater and four stern appendages are observed from the velocity vectors.

同实测结果进行了对比，相当吻合。

The hy-dromechanical performances of the undulatory long dorsal fin propeller of Gymnarchus niloticus are estimated applying the large-amplitude elongated-body theory...

计算表明：&尼罗河魔鬼&在0.728～0.985身长／s的速度范围内，长背鳍波动推进的水动力学效率介于81.664％-86.420％之间，表明长背鳍波动推进游动是一种适应水中环境的高效游动模式。

The surface of propeller blades and hub is discreted by a number of small hyperboloidal quadrilateral panels with constant source and doublet distribution.

本文建立了扰动速度势面元法预报螺旋桨表面非定常压力分布的理论和数值方法。

The surface of propeller and its trailing vortex are discreted by a number of small hyperboloidal quadrilateral panels with constant source and doublet distribution.

采用面元法预报大侧斜螺旋桨水动力性能，螺旋桨表面及尾涡面离散为四边形双曲面元，每个面元上布置等强度源汇和偶极子分布。

Vortex lattice method is presented for calculating the loading distributions on all blades of propeller and hub which a number of small hyperboloidal quadrilateral panels are discreted.

螺旋桨采用离散涡环法，将桨叶表面和桨毂表面离散为一系列双曲四边形，在四边形网格中布置集中涡环和线源分布，根据物面条件建立方程得到涡和源汇分布的强度。

In order to analyze the influence of fins,a low-order panel method based on velocity potential was used to predict the steady hydrodynamic performance of a podded propeller with fins.

为了分析鳍对吊舱推进器水动力性能的影响，用基于速度势的低阶面元法预报附鳍吊舱推进器的定常水动力性能。

This paper presents a wake impingement modelthat was incorporated into a panel method code,Propella,and its applications in simulations of a podded propeller .

本文介绍一种已经嵌入一面元法程序的尾涡砰击模型，及其在一吊舱桨尾涡撞击支柱诱导表面压力模拟中的应用。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了