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虚拟激励法的汽车气动噪声研究

朱远征 左言言 华敏相 朱晨曦 郑铭垠

朱远征, 左言言, 华敏相, 朱晨曦, 郑铭垠. 虚拟激励法的汽车气动噪声研究[J]. 机械科学与技术, 2017, 36(4): 626-631. doi: 10.13433/j.cnki.1003-8728.2017.0422
引用本文: 朱远征, 左言言, 华敏相, 朱晨曦, 郑铭垠. 虚拟激励法的汽车气动噪声研究[J]. 机械科学与技术, 2017, 36(4): 626-631. doi: 10.13433/j.cnki.1003-8728.2017.0422
Zhu Yuanzheng, Zuo Yanyan, Hua Minxiang, Zhu Chenxi, Zheng Mingyin. Study on Automobile Aerodynamic Noise based on Pseudo-excitation Method[J]. Mechanical Science and Technology for Aerospace Engineering, 2017, 36(4): 626-631. doi: 10.13433/j.cnki.1003-8728.2017.0422
Citation: Zhu Yuanzheng, Zuo Yanyan, Hua Minxiang, Zhu Chenxi, Zheng Mingyin. Study on Automobile Aerodynamic Noise based on Pseudo-excitation Method[J]. Mechanical Science and Technology for Aerospace Engineering, 2017, 36(4): 626-631. doi: 10.13433/j.cnki.1003-8728.2017.0422

虚拟激励法的汽车气动噪声研究

doi: 10.13433/j.cnki.1003-8728.2017.0422
基金项目: 

教育部博士点基金项目(20103227110009)与江苏省高校自然科学研究项目(13KJD460002)资助

详细信息
    作者简介:

    朱远征(1990-),硕士研究生,研究方向为振动与噪声控制,yuanzhengzhu@126.com

    通讯作者:

    左言言(联系人),教授,博士,yyzuo@ujs.edu.cn

Study on Automobile Aerodynamic Noise based on Pseudo-excitation Method

  • 摘要: 采用分离涡模拟(DES)方法对车外流场进行瞬态计算得到车身表面脉动压力,将虚拟激励法应用于求解汽车内部的气动噪声场,利用声振耦合法得到车内场点的声压级频谱。对不同车速不同位置的噪声特性进行了对比分析和道路实验验证。结果表明:汽车气动噪声为宽频谱,在某一特征频率处达到峰值后呈指数型下降;噪声截止频率和峰值频率随着车速的提高向高频移动;声压级大小与脉动压力强度以及辐射面积有关;将虚拟激励法应用于气动噪声求解是可行的。
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出版历程
  • 收稿日期:  2015-09-14
  • 刊出日期:  2017-04-05

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