螺旋桨表面和它的尾涡面离散为四边形双曲面元，每个面元上布置等强度偶极子和源汇分布。
The surface of propeller and its trailing vortex is divided into a number of small hyperboloidal quadrilateral panels with constant source sink and doublet distributions.
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.
采用了一个修正的螺旋桨尾涡模型，来模拟导管螺旋桨尾涡片的扭曲变形及分离现象。
A modified trailing vortex wake model of propeller is introduced to describe the distortion and separation of the trailing vortex sheet.
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.
进一步优化螺旋桨尾涡模型，并进行了实例计算与试验结果、原计算结果对比分析，结果表明改进后的尾涡模型计算结果具有更高的精度。
Practical sample is calculated and experimental test is carried out. Comparison with the previous result shows that the improved wake model gives resalls with higher accuracy.
本文用涡动力学理论分析了锯齿形叶梢对螺旋桨的梢涡的影响。
The effect of the sawtooth shape tip on tip vortex of the propeller is studied with the theory of vortex dynamics in the paper.
在小进距比的重载情况，螺旋桨尾涡的收缩对螺旋桨的性能影响较大。
In the case of heavy load when the advance ratio of propeller is small, the contraction of wake has large effect on the performance of the propeller.
它们使用的操纵和控制系统大多是由多个螺旋桨推进器组成的，这样的系统体积大、重量大、能耗高、综合效率低，并有较大的噪音和尾涡。
Their maneuvering and control systems are made up of several propellers. This system has many disadvantages such as big volume, high consuming of energy, low total efficiency , high noise and vortex.
设计了圆盘型涡凹曝气头和螺旋桨型涡凹曝气头，比较了两种类型曝气器的引气量、曝气气泡直径、粒径分布等。
The design of the disc turbine aerator and the oar turbine aerator are discussed. Their inspiratory capacity, air bubble diameter and distribution frequency are compared.
设计了圆盘型涡凹曝气头和螺旋桨型涡凹曝气头，比较了两种类型曝气器的引气量、曝气气泡直径、粒径分布等。
The design of the disc turbine aerator and the oar turbine aerator are discussed. Their inspiratory capacity, air bubble diameter and distribution frequency are compared.
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