Optimization of axial fans with highly swept blades with respect to losses and noise reduction

被引：19
|
作者：
Bamberger, Konrad [1 ]
Carolus, Thomas [1 ]
机构：
[1] Univ Siegen, Inst Fluid & Thermodynam, D-57068 Siegen, Germany
来源：
NOISE CONTROL ENGINEERING JOURNAL | 2012年 / 60卷 / 06期
关键词：
FLOW;
D O I：
10.3397/1.3701043
中图分类号：
O42 [声学];
学科分类号：
070206 ; 082403 ;
摘要：
A low pressure axial fan with swept blades is optimized with respect to sound emission and efficiency. Noise is addressed by a modified sweep strategy. Regarding aerodynamics, geometrical parameters describing variations of the blade section and the hub contour are defined. The optimum in terms of maximal total-to-total fan efficiency at the design point is achieved by numerous CFD simulations embedded in the Simplex optimization method. Besides a moderate increase in efficiency at the design point, a remarkable extension of operating range is observed. The numerical results are successfully validated against experiment measurements. Acoustic measurements furthermore show a decrease in sound emission over the complete operating range. (C) 2012 Institute of Noise Control Engineering.
引用
收藏
页码：716 / 725
页数：10
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