三元体系汽液平衡数据的热力学一致性逐点检验

POINT TO POINT THERMODYNAMIC CONSISTENCY TEST OF VAPOR LIQUID EQUILIBRIUM DATA FOR TERNARY SYSTEM

用曲面样条函数表达三元ＶＬＥ体系过量自由焓Ｑ函数，非线性方程组用Ｂｒｏｙｄｅｎ改进的ＮｅｗｔｏｎＲａｐｈｓｏｎ法求解，对１６个不同类型三元ＶＬＥ体系的检验表明，本方法具有计算结果可靠，算法稳定，对初值要求不高及收敛速度快等特点，为三元ＶＬＥ数据的热力学一致性逐点检验提供了一种有价值的方法。

The ternary excess free enthalpy function Q was described by a spline function for curved surface The nonlinear equations were solved by iteration procedure based on Broyden modified Newton Raphson method 16 ternary VLE systems with different thermodynamic properties were tested by this method The results show that it is very stable, reliable, convergent and easy to initialize And a useful point to point method of thermodynamic consistency test for ternary VLE system was proposed