界面层内压力分布的热力学分析

Thermodynamic analysis of pressure distribution in gas-fluid interface

用能量方法分析了界面特性与热力学的关系 ,导出了界面层内压力分布的一般表达式 ,并与Gibbs方法进行比较 .当简化到不考虑界面层厚度时 ,在界面处压力发生突变 ,所得结果与界面热力学中的Young

Energy analysis method is used to analyze the thermodynamic property in gas-fluid interface, and pressure distribution in gas-fluid interface has derived. Compared with the Gibbs's method, it shows that the pressure changes sharply in the interface when its thickness limits to zero, and the deduction accords with the Young-Laplace's equation.