摘要
在求解非线性方程组的拟牛顿法的基础上(本文选用BFGS秩2算法),本文使用部分一维搜索,得到了一种能扩大收敛域,提高数值稳定性的改进拟Newton法——BZ法。并用四个化学工程中的非线性问题和换热网络的模拟对BFGS算法和BZ算法进行了比较。结果表明,BZ算法优于BFGS算法。
On the basis of BFGS method for solving simultaneosu nonlinear equations, a modified Quasi-Newton method(BZ method)based on the partial one-dimensional search technique is developed for promoting the convergency and the stability of nonlinear equations, and four nonlinear prolems and a heat exchanger network in chemical engineering are simulated to compare BFGS with BZ methods, the results show that the BZ method is superior to-BFGS method.
出处
《化学工程》
CAS
CSCD
北大核心
1990年第3期69-73,共5页
Chemical Engineering(China)
