Achieving acoustic cloak by using compressible background flow

Achieving acoustic cloak by using compressible background flow
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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
期刊:
影响因子:
1.7
通讯作者:
Ge Mo-Lin
Ge Mo-Lin
中科院分区:
物理与天体物理3区
文献类型:
--
作者:
Zhang Ruo-Yang;Zhao Qing;Ge Mo-Lin

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相似文献

我们提出了一种在可压缩流体中借助背景无旋流实现声学球形隐身的方案。背景流形成一个虚拟的弯曲时空,引导声波绕过被隐身的物体。为了满足真实流体的规律 。 (你提供的英文内容似乎不完整,最后“To satisfy the laws of real flui”这里“flui”疑似拼写有误,且句子未结束 。)
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.
物理学的模拟转换及其在声学上的应用。
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