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基于NACA3505翼型叶片的CFD研究

Journal of Civil Aviation University of China(2010)

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Abstract
轴流风机作为空冷发电机的重要部件,直接影响到发电机的冷却效果,进而影响到发电机的稳定运行和效率.在满足某型号风机原有设计要求的条件下,通过NACA3505翼型,设计新的空间扭曲叶片模型,并对整个轴流风机进行全流道数值模拟计算.计算结果与原型叶片进行比较,经过分析表明,相对原型叶片,叶片背面的压力分布较为合理,涡流附面层较薄,涡流脱离强度减小,叶片前缘端没有出现大的涡流,后缘亦未出现涡流,不仅提高了全压效率,而且扭矩减小,风机的耗功率低.
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Key words
axial-flow fan,numerical computation,airfoil
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