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微缝共振器的非线性吸声机理

戴习文 景晓东 孙晓峰

戴习文, 景晓东, 孙晓峰. 微缝共振器的非线性吸声机理[J]. 航空动力学报, 2011, 26(3): 530-536.
引用本文: 戴习文, 景晓东, 孙晓峰. 微缝共振器的非线性吸声机理[J]. 航空动力学报, 2011, 26(3): 530-536.
DAI Xi-wen, JING Xiao-dong, SUN Xiao-feng. Nonlinear acoustic dissipation mechanism of a slit resonator[J]. Journal of Aerospace Power, 2011, 26(3): 530-536.
Citation: DAI Xi-wen, JING Xiao-dong, SUN Xiao-feng. Nonlinear acoustic dissipation mechanism of a slit resonator[J]. Journal of Aerospace Power, 2011, 26(3): 530-536.

微缝共振器的非线性吸声机理

基金项目: 航空科学基金(2009ZB51013); 高等学校博士学科点专项科研基金(20101102110010)

Nonlinear acoustic dissipation mechanism of a slit resonator

  • 摘要: 为模拟高声压级时微缝处涡声相互作用现象并计算微缝声阻抗,发展了一种离散涡模型.联合微缝离散涡模型和一维声传播模型,计算了微缝共振器的声阻抗和吸声系数.数值结果表明,微缝声学性质主要取决于涡脱落和脱落涡层的演化;共振器的吸声系数随着入射声压级的增加而增大;入射声波频率对共振器吸声系数有显著影响.研究结果和先前直接数值模拟的结果符合较好.

     

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出版历程
  • 收稿日期:  2010-10-27
  • 修回日期:  2011-02-27
  • 刊出日期:  2011-03-28

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