Journal of South China University of Technology (Natural Science Edition) ›› 2005, Vol. 33 ›› Issue (12): 96-99.

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

Lu Yi-gang  Zhang Yang   

  1. College of Physical Science and Technology,South China Univ.of Tech.,Guangzhou 510640,Guangdong,China
  • Received:2004-12-26 Online:2005-12-25 Published:2005-12-25
  • Contact: 卢义刚(1962-)，副教授，主要从事声学研究 E-mail:phyiglu@ scut.edu.cn
  • About author:卢义刚(1962-)，副教授，主要从事声学研究

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Abstract:

Based on Schaafs’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 nonlinear-ity 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 con-struction information of organic liquid mixture can also be obtained by measuring the B/A parameter of the mixture.

Key words: acoustic nonlinearity parameter, ultrasonic velocity, organic liquid, organic liquid mixture, collision factor