【摘要】 为了更有效地预测共沸系统,文内提出了同伦-牛顿联合算法,首先利用具有全局收敛性的同伦算法产生较好的初值,然后利用收敛速度快的牛顿算法求解共沸方程。应用联合方法预测了多个二元和三元非理想性物系的共沸点,结果表明,同伦-牛顿联合方法有较大的收敛范围,较高的迭代过程稳定性,较快的收敛速度。更多还原

【Abstract】 The homotopy-Newton hybrid method was proposed for predicting azeotropes effectively,in which the homotopy algorithm with the global convergence was used to generate the better initial values,and the Newton algorithm with the higher convergent speed was used to solve the azeotropy equations.The new method was applied to predict the azeotropies of some binary and ternary nonideal mixtures.The result shows that such method is greater in the convergent ranges,better in the iterative smoothness and higher in the convergent speeds.更多还原