中文摘要：

受限空间中油气混合物的防爆抑爆研究对于石油化工工业的安全生产具有重要意义。建立了由化学动力学和湍流机制共同控制的湍流燃烧模型描述油气的爆炸燃烧过程，采用基于矢通分裂和重构算法的具有TVD性质的有限体积法对控制方程组求解，对预惰化条件下受限空间中油气爆炸的特性进行了深入数值仿真研究．仿真结果与实验比较具有较好的吻合性。所做的工作为预惰化防爆抑爆技术在油气化工工艺生产中的系统设计、工艺实施和关键参数计算提供理论依据。

英文摘要：

The study of the fuel-air mixture explosion in restricted space has great significance. The turbulent model of explosion based multi control mechanisms for the fuel-air mixture explosion was founded. The RNG k-ε model based on the gross energy equation was adopted. According to the high rate of reaction, the turbulence phenomena, the couple of the flame and the pressure wave, a two-step combustion model was founded. The governing equations of flow and the reaction equations were solved simultaneously （i.e., coupled together） by the finite volume method （FVM）. The comparison of the predicted explosion with the experimental data shows good agreement, and the work lays a foundation on process implementing, system design and confirming key parameter of the technology using inert gas for inhibiting explosions.