EXPERIMENTAL-EVIDENCE IN ACOUSTICS OF THE VIOLATION OF TIME-REVERSAL INVARIANCE INDUCED BY VORTICITY

被引：30

作者：

ROUX, P

FINK, M

机构：

[1] Laboratoire Ondes et Acoustique, ESPCI, Université Paris, Paris

来源：

EUROPHYSICS LETTERS | 1995年 / 32卷 / 01期

关键词：

D O I：

10.1209/0295-5075/32/1/005

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Self-focusing on a point source using an acoustic time-reversal mirror (TRM) permits to test the invariance under time-reversal in fluids. The presence of vorticity in the fluid breaks time-reversal invariance as can be shown with a TRM by measuring the deflection of a time-reversed focused acoustic wave propagating through a uniform distribution of vorticity. Experimental as well as theoretical aspects are presented.

引用

页码：25 / 29

页数：5

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