Achieving acoustic cloak by using compressible background flow
Achieving acoustic cloak by using compressible background flow
复制标题
利用可压缩背景流实现声学斗篷
DOI:
10.1088/1674-1056/25/8/084702
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发表时间:
2016-05
影响因子:
1.7
通讯作者:
Ge Mo-Lin
中科院分区:
文献类型:
--
作者:
Zhang Ruo-Yang;Zhao Qing;Ge Mo-Lin
We propose a scheme of acoustic spherical cloaking by means of background irrotational flow in compressible fluid. The background flow forms a virtual curved spacetime and guides the sound waves bypass the cloaked objects. To satisfy the laws of real fluid, we show that spatially distributed mass source and momentum source are necessary to supply. The propagation of sound waves in this system is studied via both geometric acoustics approximation and full wave approach. The analytic solution of sound fields is obtained for plane wave incidence. The results reveal the effect of phase retardation (or lead) in comparison with the ordinary transformation-acoustic cloak. In addition, the ability of cloaking is also evaluated for unideal background flows by analyzing the scattering cross section.
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影响因子:
4.6
作者:
Garcia-Meca, C.;Carloni, S.;Barcelo, C.;Jannes, G.;Sanchez-Dehesa, J.;Martinez, A.
通讯作者:
Martinez, A.
影响因子:
8.6
作者:
Horstmann, B.;Reznik, B.;Cirac, J. I.
通讯作者:
Cirac, J. I.
DOI:
--
发表时间:
2007
期刊:
--
影响因子:
--
作者:
通讯作者:
--
影响因子:
3.5
作者:
Barceló, C;Liberati, S;Visser, M
通讯作者:
Visser, M
DOI:
--
发表时间:
2008
期刊:
--
影响因子:
--
作者:
Steven A. Cummer;Marco Rahm;David Schurig
通讯作者:
Steven A. Cummer;Marco Rahm;David Schurig