摘要
由解析法分析天然气管道不稳定工况时,通常是引入一线性化系数,将方程线性化,然后再对其求解。但这种方法应用于某些管道往往会带来较大误差。对此,本文根据天然气流动情况,引入一线性化函数,通过求解非线性方程得到了解析解。本文还给出了算例,并与数值法结果进行比较,相对误差小于5％。因此,本文的计算方法可用于工程实际计算。
When analyzing the unstably working conditions of the natural gas in pipeline by use of analytical method, a linearized coefficient is generally introduced,making the equations linearization and then solving them. But this method applied to some pipelines often brings about more considerable error. Therefore, this paper introduces a linearized function in light of the flow conditions of natural gas and obtains an analytic solution through solving nonlinear equations. An example for this calculation is presented in this paper and its relative error is less than 5%, comparing with the result of numerical method. Thereby this calculation method can be applied to the practical engineering calculation.
出处
《天然气工业》
EI
CAS
CSCD
北大核心
1992年第4期69-71,共3页
Natural Gas Industry
关键词
不稳定流动
天然气
集输管道
natural gas, gathering pipeline, unstable flow, analytical method.
