二维随机液体介质中声传播的相变
A Phase transition in acoustic propagation in 2D random liquid media
摘要：
研究了声波在含有多个平行充气圆柱体的液体介质中的传播问题。一个自洽的方法是用来严格计算的传播，将所有订单的多次散射。结果表明，在适当的条件下，多次散射导致声传播中的一个特殊的相变。当发生相变时，出现圆柱体的集体行为，并且声波被限制在发射源附近的空间区域中。用一种新的相图来描述这种相变。最初于1999年4月6日提交。
英文摘要：
Acoustic wave propagation in liquid media containing many parallel air-filled cylinders is considered. A self-consistent method is used to compute rigorously the propagation, incorporating all orders of multiple scattering. It is shown that under proper conditions, multiple scattering leads to a peculiar phase transition in acoustic propagation. When the phase transition occurs, a collective behavior of the cylinders appears and the acoustic waves are confined in a region of space in the neighborhood of the transmission source. A novel phase diagram is used to describe such phase transition. Originally submitted on April 6, 99.
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