惰性气体抑制管道中可燃气体爆炸的数值模拟

管道内可燃气体的防爆抑爆研究对于石油及天然气工业的安全生产具有重要意义。以RNG 湍流模型及EBU Arrehnius燃烧模型为基础，建立了管道内可燃气体单步化学反应湍流爆炸模型；并以有限体积法求解了爆炸流动及反应控制方程，从而对二维管道中惰性气体抑制可燃气体爆炸的过程及规律进行了数值模拟。模拟结果与实验数据有着较好的吻合性，可为燃气管道中惰性气体防爆抑爆技术的工艺实施、系统设计和关键参数计算提供理论依据。

NUMERICAL SIMULATION OF FLAMMABLE PIPE GAS EXPLOSION INHIBITION WITH INERT GAS

The study of the flammable gas explosion in pipeline has great significance. The turbulent model of explosion is founded on the basis of the single-step chemistry reaction. The RNG model is adopted. According to the high rate of reaction and the turbulence phenomena, EBU-Arrehnius combustion model is applied. The governing equations of flow and the reaction equations are solved simultaneously (i.e., coupled together) by the finite volume method (FVM). Process and law of explosion inhibition of flammable gas by inert gas in two-dimension pipe is studied by numerical simulation. The results were well in line with experiment date which can provide theory foundation for process implementation, system design and key parameter calculation of the explosion-proof technology with inert gas.