摘要
叶尖间隙是影响风扇的效率和噪声重要因素之一,选择合适的叶尖间隙,对降低风扇噪声和保障风扇效率有重要意义。针对某轴流冷却风扇,利用流体分析软件Fluent对冷却风扇进行了流场仿真分析和优化,研究了叶尖间隙对气动噪声的影响规律。结果表明,当叶尖间隙为7 mm时,风扇降噪效果理想,在保证风扇冷却性能的基础上,较明显降低了风扇噪声。仿真结果与实验结果一致,从而证明该优化方案是可行的。
As the tip clearance is an important factor for the efficiency and noise of the fan, selecting appropri-ate tip clearance is important. For the axial flow fan, in this paper, the fan＇ s fluid field is analyzed and its pa-rameter is optimized by fluent analysis software. The effect of tip clearance on aerodynamic noise is also re-searched. The simulation results show that de-noising achieve an ideal effect when the tip clearance value is7mm. The simulation results are in agreement with the experimental results, it proves that optimization schemeis useful and effective.
出处
《重型机械》
2015年第5期59-62,共4页
Heavy Machinery
基金
中国博士后科学基金(2014M560220)
国家科学支撑计划(2013BAF07B04)
