【摘要】 为准确预测超声速燃烧室凹腔结构内的流场流动情况,对凹腔流场进行冷态数值模拟研究。采用Fluent软件和SST k-ω湍流模型,分析6种纵深比情况下凹腔的流动特性,得到凹腔进口高度和不同的转捩模型对流动特性的影响。研究结果对定量认识凹腔流场、优化凹腔构型、设计效率高的火焰稳定器具有一定借鉴作用。更多还原

【Abstract】 In order to accurately predicting the flow field inside the cavity structure of the supersonic combustor,cold numerical simulation of the flow field of the cavity was studied.Use the Fluent software and SST k-ω turbulence model,six kinds of vertical height ratio of the flow characteristics of the situation cavity was analyzed.The research result has a certain reference for providing a better understanding of the cavity flow field,optimizing the configuration of the cavity and designing of high efficiency flame holder.更多还原