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船用离心风机内部流动诱发蜗壳振动的数值研究

张建华 楚武利 董兴杰 张皓光

张建华, 楚武利, 董兴杰, 张皓光. 船用离心风机内部流动诱发蜗壳振动的数值研究[J]. 机械科学与技术, 2016, 35(4): 523-530. doi: 10.13433/j.cnki.1003-8728.2016.0405
引用本文: 张建华, 楚武利, 董兴杰, 张皓光. 船用离心风机内部流动诱发蜗壳振动的数值研究[J]. 机械科学与技术, 2016, 35(4): 523-530. doi: 10.13433/j.cnki.1003-8728.2016.0405
Zhang Jianhua, Chu Wuli, Dong Xingjie, Zhang Haoguang. Numerical Investigation of Internal Fluid-induced Volute Vibration in a Marine Centrifugal Fan[J]. Mechanical Science and Technology for Aerospace Engineering, 2016, 35(4): 523-530. doi: 10.13433/j.cnki.1003-8728.2016.0405
Citation: Zhang Jianhua, Chu Wuli, Dong Xingjie, Zhang Haoguang. Numerical Investigation of Internal Fluid-induced Volute Vibration in a Marine Centrifugal Fan[J]. Mechanical Science and Technology for Aerospace Engineering, 2016, 35(4): 523-530. doi: 10.13433/j.cnki.1003-8728.2016.0405

船用离心风机内部流动诱发蜗壳振动的数值研究

doi: 10.13433/j.cnki.1003-8728.2016.0405
基金项目: 

国家自然科学基金重点基金项目(51236006)资助

详细信息
    作者简介:

    张建华(1984-),博士研究生,研究方向为叶轮机械气动声学及减振降噪优化设计,lieying.2004@163.com

    通讯作者:

    楚武利(联系人),教授,博士,博士生导师,wlchu@nwpu.edu.cn

Numerical Investigation of Internal Fluid-induced Volute Vibration in a Marine Centrifugal Fan

  • 摘要: 针对船用离心风机内部非定常流动诱发蜗壳结构振动响应,发展了一种数值计算方法,该方法首先通过风机内部非定常流场计算获得振动激励源,其次采用流固弱耦合算法实现节点的插值和载荷加载,最后基于有限元的模态叠加法得到蜗壳结构动力响应。流场压力脉动和振动计算结果和实验测试结果分别做了对比,结果吻合较好,表明本文的方法能较准确地模拟叶轮机械内部流动诱发外部壳体的振动响应。从流场和振动响应两个方面阐述了流动诱发振动的机理:基频的非定常气动力是流固耦合振动的主要激励源,基频分量在振动的频率响应函数中占据主导地位,蜗壳的最大振动响应是基频下的非定常气动力和基频振动模态共同作用的结果。
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出版历程
  • 收稿日期:  2014-06-13
  • 刊出日期:  2016-04-05

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