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表面楔形结构对发动机冷却风扇性能影响研究

李娜 朱茂桃 李凯强 朱彩帆

李娜, 朱茂桃, 李凯强, 朱彩帆. 表面楔形结构对发动机冷却风扇性能影响研究[J]. 机械科学与技术, 2018, 37(4): 519-524. doi: 10.13433/j.cnki.1003-8728.2018.0405
引用本文: 李娜, 朱茂桃, 李凯强, 朱彩帆. 表面楔形结构对发动机冷却风扇性能影响研究[J]. 机械科学与技术, 2018, 37(4): 519-524. doi: 10.13433/j.cnki.1003-8728.2018.0405
Li Na, Zhu Maotao, Li Kaiqiang, Zhu Caifan. Research on Influence of Wedge Structure on Performance of Engine Cooling Fans[J]. Mechanical Science and Technology for Aerospace Engineering, 2018, 37(4): 519-524. doi: 10.13433/j.cnki.1003-8728.2018.0405
Citation: Li Na, Zhu Maotao, Li Kaiqiang, Zhu Caifan. Research on Influence of Wedge Structure on Performance of Engine Cooling Fans[J]. Mechanical Science and Technology for Aerospace Engineering, 2018, 37(4): 519-524. doi: 10.13433/j.cnki.1003-8728.2018.0405

表面楔形结构对发动机冷却风扇性能影响研究

doi: 10.13433/j.cnki.1003-8728.2018.0405
详细信息
    作者简介:

    李娜(1993-),硕士研究生,研究方向为轴流风扇气动性能控制、轴流风扇噪声控制,onlylina@yeah.net

    通讯作者:

    朱茂桃,教授,硕士生导师,博士,zhumt@ujs.edu.cn

Research on Influence of Wedge Structure on Performance of Engine Cooling Fans

  • 摘要: 采用CFD/CAA分布耦合仿真方法,在额定工况下对发动机冷却风扇叶片吸力面是否设置凸起楔形结构的两种方案的流场与声场进行三维数值模拟,研究了楔形结构对冷却风扇气动性能和噪声性能的影响。结果表明,该楔形结构对冷却风扇气动性能影响较小,而对其噪声性能影响显著;设置了楔形结构后冷却风扇进出风口噪声值分别下降8.8%和8.9%,风量略有增加。通过分析冷却风扇流场及声场的分布情况,可知楔形结构在叶片吸力面起到了"涡流发生器"的作用,促进边界层提前转捩,进而大大降低了叶片表面气流过早分离引起的涡流噪声,因此总声压级也明显下降。
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出版历程
  • 收稿日期:  2017-02-18
  • 刊出日期:  2018-04-05

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