基于隐式法的天然气管道动态仿真  

Dynamic simulation of natural gas pipeline based on implicit method

作　　者：董斌 Dong Bin(Xi’an Petroleum University,Shan Xi Xi’an 710065)

机构地区：[1]西安石油大学,陕西西安710065

出　　处：《云南化工》2020年第5期84-86,共3页Yunnan Chemical Technology

摘　　要：在天然气管道等温流动情况下,根据气体流动状态的连续性方程、运动方程及状态方程的结合,通过对管道内天然气流动状态的分析以及隐式法差分格式的解析,推导出气体管道隐式法差分方程组,并通过隐式法差分方程组的解析,讨论天然气管道在时间变化下的各个节点的流量和压力的变化。通过Python语言进行计算机编程,实现了天然气管道隐式法的动态仿真计算,并将计算结果与PNS仿真软件计算结果做对比,程序计算结果满足精度要求。in the case of isothermal flow of natural gas pipeline,according to the combination of continuity equation,motion equation and state equation of gas flow state,through the analysis of natural gas flow state in pipeline and the analysis of implicit difference scheme,the implicit difference equation group of gas pipeline is derived,and through the analysis of implicit difference equation group,the time variation of natural gas pipeline is discussed Change of flow and pressure of each node.The dynamic simulation calculation of natural gas pipeline implicit method is realized by computer programming with Python language,and the calculation result is compared with that of PNS simulation software,which meets the accuracy requirements.

关 键 词：隐式法 天然气管道 动态仿真 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]