有机液体中声参量与液体分子半径的联系

Connection of acoustic parameters with molecular radius in organic liquid

由Schaaffs理论得到有机液声速温度系数、压力系数及非线性声参量的表达式。结果表明,上述声参量与液体分子半径密切联系。在常温常压下,有机液声速系数c/T_p<0,(c/p)_T>0,非线性声参量B/A≥8。

The expressions of the sound speed coefficients and the nonlinearity parameter are derived in terms of molecular radius of the liquid. The results shown that the temperature coefficent of the sound speed in organic liquid is negative while the pressure coefficent of the sound speed is positive. It is also shown that the acoustic nonlinearity parameter in organic liquid should be noless than 8.