摘要
摩阻系数是管道仿真软件水力计算的重要参数,为了提高模拟准确度,研究优化设置软件中的摩阻计算公式和参数很有意义。编程计算了Weymouth、Pan(A)、Pan(B)、AGA、Colebrook、Nikuradse公式在不同相对粗糙度和雷诺数下的摩阻系数,和Moody标准图谱比较精度后获得了各公式的适用范围,发现Colebrook公式的适用范围和精度最优,AGA公式次之,其他公式则适用于不同的范围。结合3条真实管道与现场实际工况,在模型仿真运行时动态调整绝对粗糙度,反算出实际值0.010、0.015和0.013 mm。故绝对粗糙度推荐值为0.010～0.015 mm。
The friction factor is an important parameter in hydraulic calculation for pipeline simulation software. It is necessary to select the optimum friction calculation formula and parameters in order to improve simulation accuracy. Calculated are friction factors with different relative roughness and Reynolds numbers by programming and using such formulas as Weymouth,Pan(A),Pan(B),AGA,Colebrook and Nikuradse,obtained is the application scope of these formulas through accuracy comparison with standard atlas Moody,the application scope and accuracy of Colebrook are optimum,and the second one is AGA and others are applicable to different ranges. Practical application of the formulas in three pipelines shows that the recommended absolute roughness ofpipelines is from0.010 to0.015mm.
出处
《天然气与石油》
2013年第1期20-23,6,共4页
Natural Gas and Oil
基金
国家自然科学基金项目"天然气管道跨越结构清管动力响应实验及理论研究"资助(51174172)
关键词
摩阻系数
管道仿真
管道设计
水力计算
Friction factor
Gas pipeline simulation
Pipeline design
Hydraulic calculation
