摘要
通过引入多孔介质模型,建立了适用于复杂管束结构的CFD计算模型,并利用文献数据对其进行了校核。在此基础上,对安装回热器模块后的喷管流场进行数值仿真研究,得到燃气在喷管内的流动结构、压力损失及流量分配参数。基于Isight优化平台,在给定相同压力损失条件下,得到通过回热器最大总燃气流量下的安装方案,以及安装变量对优化目标函数的影响权重,可为回热器安装设计提供指导,并为进一步的全三维CFD研究提供理论支持。
The CFD model adapting to the complex tube geometry was built by using the porosity model.For the validation of the CFD modeling, the comparison between experimental data from reference and cal-culation results was carried out. Based on the CFD model, the nozzle flowfield was investigated, the flowstructure, pressure loss and mass flow distribution of the gas were obtained. The optimized installation wasthe maximization of the mass flow for the same amount of pressure loss in the Isight platform. During proce-dure of the optimization, the weight factors of installation variables on optimized object function were alsoobtained. It not only provides guidance for recuperator installation design, but also theoretical support forfurther full 3D CFD research.
出处
《燃气涡轮试验与研究》
北大核心
2016年第1期41-46,35,共7页
Gas Turbine Experiment and Research
关键词
航空发动机
间冷回热循环
回热器
压力损失
多孔介质模型
优化安装设计
流量平衡
aero-engine
intercooled recuperated cycle
recuperator
pressure loss
porous media
installation optimization
balance of mass flow
