管网水力计算收敛性的研究及优化

The Research and Optimization on Hydraulic Calculation Convergence of Gas Pipe Network

深入研究了摩擦阻力系数对燃气管网水力计算收敛性的影响，对大管径或小流量情况下迭代过程不收敛或收敛速度慢的问题进行了分析，并提出了解决方案，通过采用柯列勃洛克公式计算摩擦阻力系数 λ、小流量管道判据和精度控制准则等方法，有效地解决了大管径或小流量情况下迭代过程不收敛或收敛速度慢的问题，从而大大减小了燃气管网水力计算的工作量，提高了计算精度和迭代速度，并利用自行开发的燃气管网水力计算程序进行了仿真研究。

On an in-depth study of friction factor influence on hydraulic calculation conver- gence of gas pipe network, the problem that the problem that large diameter or small traffic case iteration does not converge or slowly converge was analyzed, and the solutions were proposed. Using small flow channel precision control criteria and guidelines, choosing C. F. COLEBROOK equation to calculate friction factor λ, this study effectively solved the problem that large diameter or small traffic case iteration does not converge or slowly converge reduced the calculation of gas pipe network and improved work efficieney. The simulation was based on the self-developed gas pipe network hydraulic calculation program.