基于氢氧十九步基元反应化学动力学机理,对应用于新型模块式微热光电系统中的亚毫米级平板式微通道燃烧室内的燃烧过程进行数值模拟,分析了通道高度、体积比、进气流量、喷口形状等参数对微容腔内氢氧燃烧的影响,获得了燃烧室外壁面温度场随各参数的变化规律,发现适当的过量氧气能获得较佳的温度分布,细长喷口可提高燃烧效率和壁面温度。这些特性分析为微热光电系统的设计提供了依据。
Based on the H2/O2 nineteen steps chemistry skeletal mechanism,the combustion process in a sub-millimeter plane cell micro combustor was simulated numerically,which was applied in a novel modular micro thermal photo-voltaic system.The influences of combustion channel's height,H2/O2 ratio,mass flow rate,inlet's form were discussed,the effects of these parameters on the temperatures distribution were obtained.The results show that the high average temperature can be achieved when the stoichiometric proportion is 0.83,the slightness nozzle's application can improve the combustion efficiency and the temperature.It provides foundation to the design of a micro thermophotovoltaic system.