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罗茨风机进气空滤器声学与阻力特性数值分析

戚美 付琪琪 陈庆光 王伯韬

戚美,付琪琪,陈庆光, 等. 罗茨风机进气空滤器声学与阻力特性数值分析[J]. 机械科学与技术,2020,39(12):1859-1864 doi: 10.13433/j.cnki.1003-8728.20190337
引用本文: 戚美,付琪琪,陈庆光, 等. 罗茨风机进气空滤器声学与阻力特性数值分析[J]. 机械科学与技术,2020,39(12):1859-1864 doi: 10.13433/j.cnki.1003-8728.20190337
Qi Mei, Fu Qiqi, Chen Qingguang, Wang Botao. Numerical Analysis on Acoustic and Resistance Performances of Air Intake Filter of Roots Blower[J]. Mechanical Science and Technology for Aerospace Engineering, 2020, 39(12): 1859-1864. doi: 10.13433/j.cnki.1003-8728.20190337
Citation: Qi Mei, Fu Qiqi, Chen Qingguang, Wang Botao. Numerical Analysis on Acoustic and Resistance Performances of Air Intake Filter of Roots Blower[J]. Mechanical Science and Technology for Aerospace Engineering, 2020, 39(12): 1859-1864. doi: 10.13433/j.cnki.1003-8728.20190337

罗茨风机进气空滤器声学与阻力特性数值分析

doi: 10.13433/j.cnki.1003-8728.20190337
基金项目: 国家自然科学基金项目(51674156)与山东省自然科学基金项目(ZR2018MEE036)资助
详细信息
    作者简介:

    戚美(1969−),副教授,硕士生导师,研究方向为节能降噪技术,1138053669@qq.com

  • 中图分类号: TB535

Numerical Analysis on Acoustic and Resistance Performances of Air Intake Filter of Roots Blower

  • 摘要: 以某型罗茨风机用空气滤清器为研究对象,采用声学有限元法和计算流体动力学方法,分别对空气滤清器的声场和流场进行数值模拟,分析有无滤芯及不同进气速度下滤芯高度、内径和外径对空气滤清器传递损失和压力损失的影响。研究表明:有滤芯时空气滤清器对1200 Hz以上高频噪声的消声性能有较大改善,提供了更好的宽频消声特性,但滤芯也会产生附加的压力损失;要使空气滤清器具有较好的消声性能且压力损失较小,滤芯高度应在300 ~ 350 mm范围内选取;在允许的压力损失范围内,相同滤芯厚度下应尽可能以增大滤芯外径的方式来提高消声性能。本文的研究结果可以为空气滤清器的结构优化与设计提供参考。
  • 图  1  空滤器结构示意图

    图  2  空滤器声学有限元模型

    图  3  有无滤芯对传递损失的影响

    图  4  滤芯高度H对传递损失的影响

    图  5  滤芯内径d对传递损失的影响

    图  6  滤芯外径D对传递损失的影响

    图  7  有、无滤芯时的速度分布

    图  8  有、无滤芯时的压力分布

    图  9  不同结构参数对压力损失的影响

    表  1  模拟用空滤器参数

    计算参数计算取值
    进口气流速度v/(m·s−1) 15,20,25
    滤芯高度H/mm 200,250,300,350,400
    滤芯内径d/mm 130,140,150,160,170
    滤芯外径D/mm 160,170,180,190,200
    下载: 导出CSV
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出版历程
  • 收稿日期:  2019-10-22
  • 网络出版日期:  2020-12-08
  • 刊出日期:  2020-12-05

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