石油化工高等学校学报2013，Vol.26Issue(1)：63-67,5.DOI:10.3969/j.issn.1006-396X.2013.01.015
天然气管道氮气置换过程混气段数值模拟
The Numerical Simulation on Mixture Gas of Nitrogen Replacement in Natural Gas Pipeline
摘要
Abstract
Through building the pipeline model, giving the boundary conditions and setting up the solver in Fluent software. analyze the character of mixture gas using species transport model. Through the analysis result know that the shape of the mixture gas changes from the shape of straight line to the shape of bullet as the inlet velocity increases. The concentration of nitrogen decreases with line regular pattern in the axis direction, as lime goes, the diffusion range is spreading: the nitrogen replacement velocity increases with the increasing of inlet velocity, at the beginning of the replacement, the increasing rate of the mixture length is faster than latter. The replacement length increases as time goes, the faster the replacement velocity the higher increasing ratio of the replacement length, and the replacement efficiency is increasing as the inlet velocity increases, hut the ratio is decreasing.关键词
天然气管道/氮气置换/混气段/速度/数值模拟Key words
Natural gas pipeline/ Nitrogen replacement/ Mixture gas/ Velocity/ Numerical simulation分类
能源科技引用本文复制引用
范开峰,王卫强,马跃,姜晗,庞自啸..天然气管道氮气置换过程混气段数值模拟[J].石油化工高等学校学报,2013,26(1):63-67,5.基金项目
辽宁省教育厅科学研究基金(L2011054). （L2011054）
