摘要
针对传统的自由度N（2C＋1）同时按正法中雅柯比矩阵元素的计算量和内存开销庞大的缺点，引入以自由度N（C＋2）教学模型为核心的压缩型块三对角线方程组联立其法，降低模型的方程和变量维数，对应用实例可节省计算存储量66％；提出了合理的相平衡常数和治值回归简化物性计算模型，可减少内存单元救和一阶偏导数的运算工作量，提高联立求解效率，进一步加强了同时校正法在微机上处理大规模精馏问题的能力。
A reduced biock-tridiagonal structure algorithm based on N(c+2) degrees of freedom model is presented, which is aimed at the primary disadvantages of the traditional method on its requirement of large scale memory space and complicated calculation for Jacobian matrix. Reasonable simplephysical models about phase equilibrium constant and enthalpy are proposed for decreasing partial derivative calculation. With this algorithm, the efficiency of simultaneous correction method is promoted and theability dealing with large size distillation flowsheets in micro-computer is also strengthened.
出处
《石油炼制与化工》
CAS
CSCD
北大核心
1997年第12期51-55,共5页
Petroleum Processing and Petrochemicals
基金
中石化发展部资助
国家教委博士点基金
