不可溶混合液体的非线性声参量  

Effective acoustic nonlinearity parameter of immiscible liquid mixture

作　　者：朱哲民[1] 龚秀芬[1] 鲁志劬[1] 刘晓宙[1] 

机构地区：[1]南京大学声学研究所,南京210008

出　　处：《声学学报》1991年第3期170-174,共5页Acta Acustica

摘　　要：本文设不可溶流体的混合液的总体积为各组份体积之和,直接求导并计及各组份体积比随压力的变化,得到混合液等效非线性声参量(B/A)_ef与各组份体积比xi,它们的(B/A);及绝热压缩系数β_i的关系,并作了实验验证,实验与理论符合较好。Assuming the total volume of immiscible liquid mixture to be the sum of volumes of individual constituents, a new formula has been derived, which relates the effective nonlinearity parameter of mixture (B/A)eff with parameters of constituents such as nonlinearity parameter (B/A)i, adiabatic compressibility βi and their volume fraction Xi. Modified Thermodynamic Method and Finite Amplitude Method are used to measure (B/A)eff of mixtures. Experimental results agree well with theory.

关 键 词：不可溶 混合液 非线性 声学参量 

分 类 号：O422.7[理学—声学]