摘要
根据能量和动量守恒原理,建立了体现非理想特性和高程变化影响的天然气管道输送热力计算模型.针对某气田实际运行的管道高程变化情况,计算了管道沿程压力和温度分布情况,结果表明,天然气温度在管道高程的峰处最低而在谷处最高,与水平管道相比,600m的高程变化会导致5℃的温度变化.
A thermal-hydrodynamic model, involved the gravity as well as the variational specific enthalpy of natural gas with pressure and temperature, was set up for predicting the flow of natural gas in pipes buried in montanic area, and the numerical research was implemented. The result shows that the temperature distribution in montanic area is obviously difference from that in flat area; the minimum temperature appear at the peak of montanic area and the maximum appear at the valley even if the gravity was neglected; the temperature distribution can be affected by gravity obviously; the temperature difference would reach 5℃ if the altitude changes 600 m.
出处
《华中师范大学学报（自然科学版）》
CAS
CSCD
北大核心
2012年第2期190-194,共5页
Journal of Central China Normal University：Natural Sciences
基金
中央高校基本科研业务费专项资金科研项目(10CX05011A)
"十二五"油气重大专项(2011ZX05017-004-HZ01)
关键词
天然气
埋地管道
热力计算
温度分布
起伏地形
natural gas
buried pipes
thermal computation
temperature distribution landform undulation
