架空含硫天然气管道泄漏扩散数值模拟研究

摘要

A leakage and diffusion equation of overhead pipelines was established, and stable and unstable leakage processes when gas pipeline perforated were simulated. The flow rate of leakage was analyzed as well as effect of wind speed on the gas diffusion. The explosion limit of methane and poison range of hydrogen sulfide under different conditions were given, which is beneficial to determine the optimal time to implement rescue.%建立了架空管道泄漏扩散过程控制方程,并对架空管道发生穿孔时的稳定泄漏和非稳定泄漏过程进行数值模拟,分析了泄漏口流速,及风速对气体扩散规律的影响,并给出了不同工况下甲烷的爆炸极限范围及硫化氢中毒范围,确定了实施营救的最佳时间.