The radius of curvature of blade tip is the most important factor that affects the quality of blade.
所以对航空发动机叶片前缘曲率半径质量的检测就尤为重要。
This new method makes the design flexible to control the curvature distribution of meanline, effective to control the diffusion factor of designed blade, and it enhances flow to resist separation.
该方法可以灵活控制叶型中弧线的曲率分布，有效控制扩散因子，提高气流抗分离的能力。
The shape of the first half in the pump passage influences the field, especially the curvature of the core, shell and blade in the entrance area.
泵轮进口段脱流和环流现象与叶轮流道的几何形状直接相关。
For the former one, the design philosophy of large sweepback angle of plow blade is introduced and for the latter one, the selection of earth entry angle and the parameters of the curvature of the plow arc discussed in this paper.
本文对前者提出了大后掠角犁翼设计思想，对后者则讨论了犁刀曲面各参数及入土角的选择。
Combined with orthogonal test method and signal-to-noise ratio method, analyzed the sensitivity of each structural parameter to the performance of the cooling fan, which is installation angle, the blade chord length, radius of curvature of the blades and hub ratio from high to low.
并结合正交试验法和信噪比法分析了各结构参数对冷却风扇性能的敏感度，冷却风扇敏感度由大到小顺序依次为安装角、叶片弦长、曲率半径和轮毅比。
The blade boundary layer uses finite element method to find out resolution and uses Richardson number to reflect the effect of the rotation and curvature on the boundary layer structure.
叶片边界层用有限元方法求解，并用Richardson数反映旋转与曲率对边界层结构的影响。
Aerodynamic design of centrifugal impeller is investigated by streamline curvature method with prescribed blade circulation profile which is described in spline curve along meridian streamlines. Passage geometry is defined in form of Bezier curves.
根据准三维气动没计方法，用Bezier曲线构造叶轮子午流道，样条曲线控制环量沿子午面流线的分布规律，气动设计离心式叶轮。
The method to design End-Bend compressor blade demands the calculation results of quasi-three-dimensional flow fields between stages of compressor and end-wall boundary layer parameters as input data, therefore, the dissertation establishes the end-wall boundary layer flow model with the assumption that the end-wall boundary layer is parallel, and combines the boundary layer model with streamline curvature method, thus developing the calculation method of quasi-three-dimensional flow field between the stages of axial-flow compressor which can take into acount the end-wall flow effects.
本文提出的端弯叶片设计计算方法，是基于压气机级间准三元流场的设计计算结果以及压气机端壁附面层参数的基础之上，因此，文中结合平行附面层假设，建立了压气机端壁附面层流动模型，并将该模型与压气机流线曲率计算方法相结合，发展了能够兼顾压气机端壁附面层流动的压气机级间准三元流场设计计算方法。
Two-dimensional incompressible turbulent boundary layer growth on the blades is calculated taking into account the blade surface curvature effect and also the rotational effect.
考虑到叶轮旋转和叶片曲率的影响，求解了叶片表面的二元，不可压湍流边界层；
The present paper has derived 2 - D turbulent boundray layer differential equations including the effects rotation and curvature to solve gas-phase flow in Blade-to-Blade stream plane of centrifugal fans.
推导了考虑旋转、曲率因素影响的二维湍流边界层微分方程，采用此方程求解了离心风机回转面的气流场。
The velocity distribution on meridianal stream surfaces and on blade surfaces were calculated by using the streamline curvature method and the rapid approximate method respectively.
应用了流线曲率法计算子午面流动，快速近似法计算叶片表面速度分布；用积分法计算二元可压缩紊流边界层。