模型加力燃烧室燃烧流场的并行计算  

PARALLEL COMPUTATION FOR LARGE-EDDY SIMULATION OF MODEL AFTERBURNER

作　　者：邵茂敏[1] 刘勇[1] 颜应文[1] 赵坚行[1] 

机构地区：[1]南京航空航天大学能源与动力学院,江苏南京210016

出　　处：《工程热物理学报》2006年第z2期183-186,共4页Journal of Engineering Thermophysics

基　　金：国家自然科学基金资助项目(No.50176017)

摘　　要：本文采用基于MPI的并行算法,采用动态内存分配、分区算法和多点重合交错网格系统,在贴体网格下对带V形槽稳定器模型加力燃烧室素流化学反应流场进行数值模拟,湍流模型采用k方程亚网格尺度模型,燃烧模型采用亚网格EBU模型,采用热通量辐射模型估算辐射通量。计算结果表明并行计算对复杂形状的化学反应流动计算效率很高,是模拟大规模的燃烧问题的有力工具。Large-eddy simulation(LES) of turbulent chemically reacting flows in the model afterburner with the V-gutter flame holder was carried out by using parallel algorithm based on the MPI library. The k-equation subgrid-scale model was used to simulate the turbulent viscosity, the chemical reaction rate was determined by the subgrid EBU combustion model and the heat flux model was employed for the heat flux.In the computer cluster, overlapping grid method was applied to treat the staggered grid in the common boundary, the dynamical memory allocation was used to reduce memory usage. Also,the computation time was dramatically reduced. Parallel computation is proved to be an effective way to simulate the turbulent flows and combustion process in the complex geometry combustor.

关 键 词：MPI 大涡模拟 并行计算 

分 类 号：TK223[动力工程及工程热物理—动力机械及工程]