摘要
大型滴灌系统的水力计算必须借助计算机用管网分析技术来解决,若使用普通微机,占用的内存的数目可能成为主要的障碍。本文提出一种节省内存,计算方法简便的有限元法,使3000～6500高阶矩阵问题能在普通个人计算机上求解。作者对有限元法中的单元离散、非线性问题的线性化、总体方程构造、元素储存以及求解等一系列问题都提出了新的见解。
The hydraulic calculation of a large scale drip irrigation system should be done with network analysis techniques. However, the amount of computer's RAM storage required may be a main threshold if a PC computer is used. The author presents a series of new methods on the element separation, linearization of nonlinear problems, construction of the general matrix formular and the element storage in a computer. Finally, a finite element method with a new calculating solution of simplicity has been developed, resulting in a maximum saving in computer storage. It makes the possibility to solve a stiffness matrix of 3 000-6 500 network nodes.
出处
《农业工程学报》
EI
CAS
CSCD
北大核心
1992年第3期53-59,共7页
Transactions of the Chinese Society of Agricultural Engineering
关键词
有限元
滴灌
树状管网
水力计算
Finite element, Drip irrigation, Tree-shape network, Hydraulic calculation
