中心差分法在燃气管道动态模拟中的应用

On application of central difference method in dynamic simulation of gas pipelines

采用中心差分格式对高压燃气长输管道非稳态流动的数学模型进行了数值求解,在考虑了能量方程和城市用气规律的基础上,对燃气管网非稳态流动问题从理论上进行了分析,编制出了用户负荷随时间变化时,压力、温度、流量沿管线分布的动态模拟程序,并通过计算实例证明该方法的可行性。

The paper obtains the numerical solution of the non-steady flow mathematical model of the high-pressure gas pipeline by adopting the central difference method, considers the energy formula and urban gas use rule, analyzes the non-steady flow problems of the gas pipeline network, compiles the dynamic simulation procedure of the pressure, the temperature and the flow along the gas pipeline distribution along with the time change and proves the feasibility of the method.