中文摘要：

惰性气体是一种高效、环保、经济的防、抑爆及消防灭火介质，惰气的来源制约了惰气安全防护技术的研究开发。以一种新型燃惰气燃烧室为研究对象，采用了RNG k-ε双方程模型描述湍流流动，随机颗粒轨道模型追踪燃油颗粒运动，考虑了化学反应动力学机制对燃烧的影响，采用了修正的EBU湍流燃烧模型计算燃烧速率，同时采用了离散坐标法表征辐射传热过程，建立了燃烧室三维气雾两相湍流燃烧模型，对燃烧室流动燃烧特性进行了深入数值模拟研究，模拟结果与实验结果的比较表明了数值模型及数值方法的合理性。在数值模拟的基础上对燃惰气燃烧室进行了优化设计，采用了多种强化燃烧技术。对优化设计燃烧室的数值模拟结果表明设计合理，满足设计要求。研究结果为情气安全技术的开发设计奠定了基础。

英文摘要：

Inert gas is a kind of efficient eco-environmental and economically beneficial media in suppressing explosions and fire prevention. But the R＆D of inert gas safety protection technology was limited for the lack of enough inert-gas resource. The generation of the inert gas by fuel burning is simple, advanced and economic. Focusing on a new-type combustor of inert gas generator by fuel burning, a three-dimensional numerical model applying gas-droplet two-phase turbulent model, modified EBU combustion model and the discrete coordinate transfer radiation model was presented. The coupling interaction between the gas phase and the particle phase and chemical reactive kinetics were considered. Factors of the flow and combustion in the combustor were analyzed. On the basis of numerical simulation, optimization design on the combustor was conducted. Multi-ways strengthening combustion technologies were applied. Numerical results indicated that the optimization structure can meet the design requirement. The work presented laid a solid foundation on development of inert gas safety technology.