Scramjet整机流场的非结构网格并行数值模拟  

Numerical parallel simulations of whole scramjet flowfields on unstructured grids

作　　者：王兰[1] 吴颖川[1] 乐嘉陵[1] 

机构地区：[1]中国空气动力研究与发展中心,四川绵阳621000

出　　处：《推进技术》2009年第1期34-40,共7页Journal of Propulsion Technology

摘　　要：为了得到某支板喷氢超燃冲压发动机内流场的细节,采用非结构网格CFD隐式解算器,耦合求解Na-vire-Stokes方程、组分连续方程和M enter的k-ω应力剪切传输(SST)湍流模型,对整机模型的冷流和三个当量油气比的湍流反应流进行了三维并行模拟。给出了流线和水的分布云图,分析了支板附近旋涡和推进流道一维质量加权平均的马赫数、静温、组分质量分数及燃烧效率等参数随当量油气比的变化,并将壁面压力和实验值进行了比较,吻合较好。除=0.8在支板附近出现了小范围亚声速外,其余状态整个内流道超声速占主流。An unstructured CFD solver which employs an implicit finite volume method to solve the complete Navire-Stokes,species and Menter s k-ω Shear Stress Transport(SST) equations in a fully coupled manner was applied to the 3-D parallel simulations of the cold and turbulent reacting flows of three fuel/air equivalence ratios  of a whole hydrogen fueled scramjet engine to get the flow information.Streamlines and H2O contours distributions were gained.Variations of vortexes near the strut and 1-D mass-weighted par...

关 键 词：超燃发动机 非结构网格 支板 湍流反应流 并行计算 旋涡 

分 类 号：V235.21[航空宇航科学与技术—航空宇航推进理论与工程]