摘要
研究了天然气管网中的瞬变流动,介绍了采用特征线法求解天然气管网瞬变流的方法,讨论了该方法的物理意义及其计算公式.采用该方法对工程实例进行了模拟与分析.结果表明,特征线法能满足不同瞬变条件下的精度与计算速度要求,对天然气管网的可靠性评价和优化管理提供了理论依据.
Transient analysis is not only a valuable reference to engineering designs but also a useful help for operationa managements. In this paper, the method of characteristics （MOC） is presented firstly. And the physical meaning and the expression of the method are disscussed. By using MOC, it is flexible to choose the time step and able to satisfy the calculated precision in transient simulations. The study show that the MOC not only increases the ef- ficiency of the numerical computation but also has an acceptable computational accuracy. Using the method is feasible to perform the numerical simulation of the transient flow in natural gas network systems.
出处
《哈尔滨商业大学学报（自然科学版）》
CAS
2009年第1期101-104,共4页
Journal of Harbin University of Commerce：Natural Sciences Edition
关键词
水力瞬变
天然气管网
数值模拟
特征线法
transient flow
natural gas
numerical simulation
method of characteristics
