Ultrasound Propagation in Concentrated Suspensions: Shear-mediated Contributions to Multiple Scattering
Ultrasound Propagation in Concentrated Suspensions: Shear-mediated Contributions to Multiple Scattering
复制标题
浓悬浮液中的超声传播：剪切介导的多重散射贡献
DOI：
10.1016/j.phpro.2015.08.135
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发表时间：
2015
期刊：
影响因子：
--
通讯作者：
Pinfield V
中科院分区：
文献类型：
--
作者：
Pinfield V
我们报道了一种适用于水中二氧化硅悬浮液的多重散射模型的解析和数值结果。我们研究了由于纵波和横波模式之间的模式转换而产生的剪切中介效应，这些模式不包括在标准的多重散射模型中。我们确定了主要的散射贡献，并给出了它们的解析形式。数值计算表明，附加剪切中介效应对横波速度和通过悬架的衰减的贡献。随着浓度的增加，我们将浓度中的三阶项合并到纵波有效波数的展开式中。计算结果与之前发表的实验数据进行了比较。
We report analytical and numerical results of a multiple scattering model applied to silica-in-water suspensions. We investigate the shear-mediated effects due to mode conversion between compressional and shear wave modes, not included in standard multiple scattering models. We identify the dominant scattering contributions and develop analytical forms for them. Numerical calculations demonstrate the contribution of the additional shear-mediated effects to the compressional wave speed and attenuation through the suspension. As concentration is increased, we incorporate third order terms in concentration to the expansion of the effective wavenumber of the compressional wave. The calculations are compared with previously published experimental data.