On the modeling of modes coupling in dissipative fluid-filled waveguide with corrugated surfaces
On the modeling of modes coupling in dissipative fluid-filled waveguide with corrugated surfaces
复制标题
波纹表面耗散流体波导中模式耦合的建模
DOI：
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发表时间：
2009
期刊：
影响因子：
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通讯作者：
M. Bruneau
中科院分区：
文献类型：
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作者：
Tony Valier;C. Potel;M. Bruneau
本文旨在提供一种替代分析模型，该模型比之前的模型更合适[C. Potel 和 M. Bruneau，J. Sound Vib。 313, 738 (2008)]，描述由于填充流体的波导表面的小一维不规则性（平行脊）上的散射而产生的模式耦合。两种模型都依赖于标准积分公式和模态分析，声场被表示为规则形状波导的本征模之间的耦合，其向外限制了所考虑的波纹波导。但这里提出的模型本质上不同于前一个模型，因为它从声压场的积分公式开始，依赖于模态展开的解决方案，而前一个模型从微分方程组（控制声压场）和适当的本征函数的内积开始，通过使用一维积分公式获得解决方案。替换这个替代...
This paper aims at providing an alternative analytical model, which would be more suitable than a previous one [C. Potel and M. Bruneau, J. Sound Vib. 313, 738 (2008)], to describe the mode coupling due to scattering on small one-dimensional irregularities (parallel ridges) of the surfaces of a fluid-filled waveguide. Both models rely on standard integral formulation and modal analysis, the acoustic field being expressed as a coupling between eigenmodes of a regularly shaped waveguide, which bounds outwardly the corrugated waveguide considered. But the model presented here departs from the previous one essentially because it starts from the integral formulation for the acoustic pressure field, the solution relying on a modal expansion, whereas the previous one starts from the inner product of the set of differential equations (which govern the acoustic pressure field) and the appropriate eigenfunctions, the solution being obtained from using a one-dimensional integral formulation. Substituting this altern...