Time domain formulation of the equivalent fluid model for rigid porous media.
Time domain formulation of the equivalent fluid model for rigid porous media.
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DOI：
10.1121/1.3082123
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发表时间：
2009-04
期刊：
影响因子：
--
通讯作者：
O. Umnova;D. Turo
中科院分区：
文献类型：
--
作者：
O. Umnova;D. Turo
导出了一组方程，它们对应于等效流体模型的时域公式。它模拟声脉冲在刚性框架多孔材料中的传播，同时考虑粘性和热效应。分析表明并数值证实，在长脉冲和短脉冲的限制下，方程可以简化为先前发表的方程。已经找到了不同脉冲持续时间的数值解，并将结果与其他时域模型进行了比较。
A set of equations has been derived which corresponds to the time domain formulation of the equivalent fluid model. It models the propagation of an acoustic pulse in rigid frame porous material accounting for both viscous and thermal effects. It has been shown analytically and confirmed numerically that the equations can be reduced to those published previously in the limit of long and short duration pulses. Numerical solutions have been found for different pulse durations and the results have been compared with other time domain models.