有机液及有机混合液非线性声参量表达式——基于声速-碰撞因子理论  

Expressions of Acoustic Nonlinearity Parameter of Organic Liquid and Organic Liquid Mixture: Derived from Ultrasonic Velocity-Collision Factor Theory

作　　者：卢义刚[1] 张杨[1] 

机构地区：[1]华南理工大学物理科学与技术学院,广东广州510640

出　　处：《华南理工大学学报（自然科学版）》2005年第12期96-99,共4页Journal of South China University of Technology(Natural Science Edition)

摘　　要：基于Schaaffs声速-碰撞因子理论,结合有关液体压力和温度对碰撞因子影响的研究结果,导出了有机液及有机混合液的非线性声参量表达式,该表达式给出了B/A参量与各组分的分子排斥力指数、热力学参量及外部温度、压力状态的关系.通过该表达式,不需知道各组分的B/A参量便能够预测混合液的B/A参量,反之,通过测定混合液的B/A参量,可以了解混合液的内部结构信息.Based on Schaaffs＇ ultrasonic velocity-collision factor theory and in view of the relationship between the collision factor and the temperature and pressure of liquid, this paper deduces the expressions of acoustic nonlinearity parameter in organic liquid and organic liquid mixture. These expressions reveal the relationships between B/A parameter and the aspects such as the molecular repulsion force exponent and thermodynamic parameter of each component, as well as the external temperature and pressure of the medium. Thus, the B/A parameter of organic liquid mixture can be predicted without knowing the B/A parameter of each component. In addition, the internal construction information of organic liquid mixture can also be obtained by measuring the B/A parameter of the mixture.

关 键 词：非线性声参量 声速 有机液 有机混合液 碰撞因子 

分 类 号：O422.7[理学—声学]