Numerical Simulation for Bent-Swept Blade in Designing Civilian Fan
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摘要: 采用数值模拟的方法,分别对弯掠叶片造型和直叶片造型两种情况下高性能民用通风机叶片内三维紊流流场进行了计算;计算程序中采用有限体积法,在任意非正交曲线坐标系下,用SIMPLE算法求解三维N-S方程和K-ε湍流方程.计算结果表明,弯掠叶片造型的民用通风机的流动参数和总性能参数更接近设计指标,而且采用弯掠叶片可以更有效地控制气流的流动,对减少二次流损失起了很大作用.Abstract: It present a numerical method, based on 3-D incompressible steady time-averaged N-S equation and K-ε turbulence model equation, using in aerodynamic designing for high efficient civilian fan. The code was adopted limited volume method and was under the non-orthogonal curve coordinate by means of famous SIMPLE. Through calculating and analyzing, it is proved that the bent-swept blade can control aerodynamic allocation, and has a higher efficiency, a nice flow field with less second flow loss when compared with a straight blade.
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Key words:
- numerical simulation /
- fans /
- blade shape construction
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