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格子Boltzmann方法应用于气动声学研究 被引量：9

Lattice Boltzmann Method for Simulating Propagating Acoustic Waves
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摘要 应用格子Boltzmann方法(LBM)对不同类型的气动声学问题进行数值研究.通过模拟一维平面声波和二维点源声波的传播,得到沿传播方向的声压脉动,其振荡幅值和衰减趋势与理论值相吻合.其次进行声波衍射和干涉现象的数值模拟.最后,模拟处于流场中运动声源辐射声场的多普勒效应.模拟结果说明LBM方法能较好地模拟低马赫数下的声学问题,包括声压脉动的传播,声波的波动特性以及流动与声波间的相互作用. For application of lattice Bohzmann method （LBM） in aeroacoustics field, four fundamental acoustic cases are simulated. Sound waves propagating with planar source and single point source are used to investigate reliability of LBM in aeroacoustics. Capability for reflecting waves is then investigated with diffraction and interference. Doppler effect is simulated to illustrate coupled acoustics and flows. In all cases, simulated acoustics is found in good agreement with analytic solutions. It shows that LBM has good performance in computational aeroacoustics field.
作者 邓义求 唐政 董宇红
机构地区 上海大学
出处 《计算物理》 CSCD 北大核心 2013年第6期808-814,共7页 Chinese Journal of Computational Physics
基金 国家自然科学基金(10972132 11272198)资助项目
关键词 气动声学 格子波尔兹曼方法 声辐射 多普勒效应 areoacoustic lattice Boltzmann method wave propagation Doppler effect
分类号 O422 [理学—声学]
  • 相关文献

参考文献15

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二级参考文献13

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共引文献10

同被引文献33

  • 1熊鳌魁.INTRINSIC INSTABILITY OF THE LATTICE BGK MODEL[J].Acta Mechanica Sinica,2002,18(6):603-607. 被引量：1
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引证文献9

二级引证文献26

计算物理
2013年 第6期

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