A model to validate effective waves in random particulate media: spherical symmetry
A model to validate effective waves in random particulate media: spherical symmetry
复制标题
验证随机颗粒介质中有效波的模型:球对称性
DOI:
10.1098/rspa.2023.0444
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发表时间:
2023
期刊:
影响因子:
--
通讯作者:
Gower A
中科院分区:
文献类型:
--
作者:
Gower A
There has not been a satisfying numerical validation of the theory of effective waves in random particulate materials. Validation has been challenging because the theoretical methods for effective waves have been limited to random particulate media in infinite slabs or half-spaces, which require a very large number of particles to perform accurate numerical simulations. This paper offers a solution by providing, from first principles, a method to calculate effective waves for a sphere filled with particles for a spherically symmetric incident wave. We show that this case can excite exactly the same effective wavenumbers, which are the most important feature to validate for effective waves. To check correctness, we also deduce an integral equation method which does not assume the effective wave solution. Our methods are, in principal, valid for any frequency, particle volume fraction and disordered pair-correlation. With the methods we provide, it is now possible to validate, with a heavier Monte Carlo simulation, the predictions from effective wave theory.
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影响因子:
3.3
作者:
Aris Karnezis;P. S. Piva;A. Gower
通讯作者:
Aris Karnezis;P. S. Piva;A. Gower
DOI:
--
发表时间:
--
期刊:
影响因子:
--
作者:
A. Unsöld
通讯作者:
A. Unsöld
影响因子:
2.4
作者:
J. Conoir
通讯作者:
J. Conoir
DOI:
10.1098/rspa.2019.0811
发表时间:
2020
期刊:
Proceedings of the Royal Society A
影响因子:
--
作者:
J. Willis
通讯作者:
J. Willis
DOI:
--
发表时间:
2014
期刊:
影响因子:
--
作者:
H. Merkus;G. Meesters
通讯作者:
G. Meesters