Transient Analysis of Gas Networks based on Method of Characteristics with Inertial Multiplier
Hydraulic analysis of steady state conditions is typically used in the design and operation of gas networks.However,operational gas network systems are never in the steady state as demands and pressures vary with time.By comparison,transient analysis is more valuable and helpful for engineering design and operational management.The method of characteristics (MOC) is often used to analyze the transient flow of gas networks because it has clear physical concepts and employs rigorous mathematical analysis and precision in calculation.However,with MOC a small time step has to be included for an accurate result,which costs a lot of computing time.In this paper,it is shown that the method of characteristics with an inertial multiplier is capable of providing a numerical simulation of the transient flow in gas networks.After the inertial multiplier is established,then the transient flow for a gas network system is numerically simulated.Two simulation outcomes are compared,one using the method of characteristics and another the method of characteristics with an inertial multiplier.Results show that the time step can be selected flexibly and the computational speed can be reduced by means of the method of characteristics with an inertial multiplier.The method of characteristics with an inertial multiplier is more efficient for transient analysis of gas networks than the method of characteristics alone.
Gas networks Transient analysis Method of characteristics with inertial multiplier
Ying Xu Yuebin Wu Qiang Sun
Lecturer, School of Energy and Architecture, Harbin University of Commerce; No.1 Xuehai Road, Harbin Corresponding author, Professor, School of Municipal & Environmental Engineering, Harbin Institute o Professor, State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technol
国际会议
北京
英文
462-472
2012-10-14（万方平台首次上网日期，不代表论文的发表时间）