基于Schaaffs理论的有机液声速压力系数和温度系数

Pressure Coefficient and Temperature Coefficient of Ultrasonic Velocity in Organic Liquid Derived from Schaaffs'Theory

基于Schaaffs理论,从有机液声速与液体分子碰撞因子关系式出发,导出了反映有机液声速压力和温度特性的声速压力系数和温度系数表达式,并与由Jacobson分子自由程-声速理论导出的表达式进行了比较.比较结果表明,两组公式计算出的几种有机液的声速压力系数和温度系数相互吻合,且均与实验值吻合较好.从理论上讲,本文中推导出的有机液声速压力系数和温度系数公式更具合理性.

Based on Schaaffs' theory, the equations of pressure coefficient and temperature coefficient of ultrasonic velocity in organic liquid were derived and were compared with the equations we had derived previous from Jacobson' s molecular free length theory in liquids and the relationship between the ultrasonic velocity and the molecular free length in organic liquids. Several kinds of pressure coefficient and temperature coefficient of ultrasonic velocity in organic liquid calculated by two formulas tally with each other and are in good agreement with the experimental results. Theoretically, the formulas presented in this paper are more rational.