南京大学学报(自然科学版) ›› 2013, Vol. 49 ›› Issue (3): 394–401.
• • 上一篇
胡洁**，刘云飞
Hu .l ie，Liu Yun fei
摘要： 对包含有限数目气泡的单层胶质体模型，在理论上研究了垂直入射的平面纵波的透射特性.
利用计及多重散射效应的自洽场方法，严格求解了该模型中的声传播问题并得到了声透射系数.数值计
算结果证明声波可在略高于气泡木征频率的频段内发生局域化，且局域化现象在气泡含量较小时己经
出现.此外，采用等效媒质方法对该模型进行均匀化近似后求解了其声透射系数.在不同结构参数下，分
析比较了两种方法所得结果的差异，考察了等效媒质方法的适用性.结果表明多重散射效应在气泡含量
较低时己显著影响当前模型的声透射特性，尽管等效媒质方法在气泡含量极低(~10-5)时可简便的得
到基本有效的计算结果，但当气泡含量变高(~10-4)时，忽略多重散射效应的等效媒质方法己不能正确
的描述此类媒质的声传播特性.
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