Keywords:design optimization, fan, blade, sweep, lean
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The effects of turbomachinery blade bow and sweep on aerodynamic loading distribution of the blade are investigated.
研究叶轮机叶片的弯扭及掠形等因素对叶片气动负荷分布的影响。
A Gas Turbine 3D Design System Capable of Analyzing Flow Field Structure in Bowed - Twist - Sweep Blade Cascade
具有弯扭掠叶片流场结构分析能力的燃气涡轮三维设计体系&弯扭掠叶片设计体系与设计思想研究之一
Abstract Aerodynamic performance and aero acoustic characteristics of straight (un sweep)、forward sweep and backward sweep blade with different installed angles have been investigated experimentally under the take off condition.
概述了具有不同安装角的直叶片、前掠叶片、后掠叶片等3种桨扇模型在起飞状态下出口流场的气动性能和气动声学实验结果及其相互间的对比。
Through simulation tail trace of upstream blade end wall by smoke, it summarize sweep effect of blade on smoke flow and the rule of the clearance leakage flow under different speed, the smoke flow diffuser angle decrease and the deflection angle increase as the rotor speed up.
通过烟雾模拟上游叶片端壁尾迹，总结出不同转速下叶片对烟雾流的掠扫效应和间隙泄漏流动的规律，随着转子转速的提高，烟雾流扩散角减小，偏转角增大。
Using Pro/E three-dimensional parameter model of the impeller is set up, this blade model is set up by feature sweep a thin board of Pro/E based on datum line that blade parametric equation of line that derived from boundary layer theory.
利用Pro/E建立了叶轮的三维参数化模型，该模型中的叶片是以边界层理论推导出的叶片型线的参数方程为基准线，利用Pro/E的薄板扫描特性而生成的。
It is shown that the blade bow, twist and leading edge sweep are effective in adjusting the loading distribution on the blade surface.
分析结果表明，叶轮机叶片的弯扭和前缘掠形对叶片的负荷分布有重要的调节作用。
Because shape of blade body is complex, NURBS method build character section curve, divide the curve with equality define point. Using sweep tool and sew tool build the 3D model.
对于叶身复杂的形状，本文提出了利用NURBS曲线建立特征截面曲线，对特征截面曲线进行均匀定义点，通过扫掠和缝合得到叶片的三维实体模型的方法。
Study and Development of Low Aspect Ratio Leading Edge Sweep or Forward Sweep Blade
小展弦比前缘后掠或前掠叶片的研究和发展
Special Shape of the blade: The blade, which has spires shape, cline to the belt when running and sweep the belt in an optimum state.
独特的刀片形状：紧贴输送带，呈尖劈状清扫输送带。在运行过程中紧贴输送带，能够保持最佳清扫状态。
In this paper, the existing studies on new blade tips are divided into three phases. First, the conventional rectangular tip is modified into the simple straight swept or tapered tip or combined sweep and taper configuration.
本文首先将桨尖形状的研究区分为三个层次：第一层次是从矩形桨尖到简单直线后掠或尖削或后掠尖削组合的变化；
Comparison with available experimental data was made for three different impellers: backswept log-spiral blade, straight radial blade, and curved blade with backward sweep. Good agreement was obtained for the streamline and velocity distributions.
就三种不同叶片的叶轮后掠式对数螺旋线叶片，直线径向叶片，后掠弯曲叶轮比较它们已有的实验数据，流线与速度的分布基本相同。
A turbine aerodynamic design system is established that is capable for modeling of a bowed - twist - sweep blade with analysis and optimization of the flow field structure applied to the aerodynamic design.
通过将结构分析与优化引申到气动设计中，建立了具有弯、扭、掠叶片流场结构分析能力的燃气涡轮气动设计体系，并将这一体系进一步划分为四个子体系。