An investigation on the effects of irregular airfoils on the aerodynamic performance of small axial flow fans
An investigation on the effects of irregular airfoils on the aerodynamic performance of small axial flow fans
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不规则翼型对小型轴流风机气动性能影响研究
DOI：
10.1007/s12206-013-0416-0
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发表时间：
2013-07
影响因子：
1.6
通讯作者：
Jin, Yu-Zhen
中科院分区：
文献类型：
--
作者：
Zhang, Li;Jin, Ying-Zi;Jin, Yu-Zhen
为了减少叶片表面气流湍流，提高小型轴流风机的气动性能，研究了翼型对小型轴流风机气动性能的影响。风机叶片压力面上有多个凸槽的异形翼型有两种。波浪形边缘与风扇的叶片后缘相结合，并由风扇的光滑翼型设计而成。采用有限体积法过滤N-S方程，采用标准k-ε湍流模型进行定常模拟计算。采用大涡模拟和FH-W噪声模型进行了非定常数值计算和气动噪声预测。模拟计算结果与试验结果吻合较好，证明了数值计算方法的可行性。分析了光滑翼型和两种不规则翼型的气动噪声频谱特性。虽然三种翼型的风扇都被视为噪声源，但也描述了非定常流场中的旋涡分布特征。对非规则翼型的降噪机理进行了探讨。研究结果可为小型低噪声轴流风机的参数优化和结构设计提供依据。
In this paper, the effects of airfoils on the aerodynamic performance of small axial flow fans were investigated to reduce airflow turbulence on the blade surface and to improve the aerodynamic performance of small axial flow fans. Irregular airfoils where several convex grooves are bound in the blade pressure surface of the fans have two kinds. The wave-shaped edge is bound to the blade trailing edge of the fans and is designed from the smooth airfoil of the fans. The filtered N-S equations with the finite volume method and the standard k-ɛ turbulence model were adopted to carry out the steady simulation calculation. The large eddy simulation and the FH-W noise models were adopted to carry out the unsteady numerical calculation and aerodynamic noise prediction. The results of simulation calculation are in good agreement with the tests, which proves that the numerical calculation method is feasible. The spectrum characteristics of aerodynamic noise of the smooth airfoil and the two kinds of irregular airfoils were analyzed. Although the fans of the three airfoils are regarded as noise sources, the vortex distribution features in the unsteady flow field are also described. Noise reduction mechanisms of the irregular designs of the airfoils were also discussed. The results of this research may provide proof of the parameter optimization and the structural design of small axial flow fans with low noise.
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影响因子：
2.4
作者：
Young-Bin Bin-Young-Bin-Bin-115601622;Cheng Zhi
通讯作者：
Young-Bin Bin-Young-Bin-Bin-115601622;Cheng Zhi
影响因子：
1.7
作者：
M. G. Beiler;T. Carolus
通讯作者：
M. G. Beiler;T. Carolus
DOI：
--
发表时间：
2009
期刊：
Journal of Jilin University
影响因子：
--
作者：
Zhang Yong-zhi
通讯作者：
Zhang Yong-zhi
DOI：
--
发表时间：
2012
期刊：
Journal of Zhejiang Sci-Tech University
影响因子：
--
作者：
L. Bo
通讯作者：
L. Bo
影响因子：
4.7
作者：
G. Koopmann;D. J. Fox;W. Neise
通讯作者：
G. Koopmann;D. J. Fox;W. Neise