摘要
推导了自然曲线坐标系下时间平均的多组分扩散方程,在原程序基础上增加了对冷气组分扩散方程的求解,以及多组分对比热和气体常数的影响。并对某型两级带冷气喷射的涡轮叶栅进行了全三维N-S方程数值求解。描述了考虑组分变化后的冷气浓度和气体常数在叶栅中的分布,所得比热、温度分布则与不考虑冷气浓度影响的计算结果进行了对比。结果表明,在冷气掺混数值计算中,冷气组分的影响有必要加以考虑。
Time averaged multi-component diffusion equation in the natural system of coordinates was deduced,and the original program was improved by considering influences of coolant on specific heat and gas constant.Simulations of flow in an air cooling turbine with two stages were performed based on the improved 3D N-S solver and original solver.Distributions of coolant concentration and gas constant were obtained with improved solver.Comparison between distributions of specific heat and temperature simulated by these two solvers showed that the variation of coolant concentration should be considered during simulations of coolant turbine.
出处
《工程热物理学报》
EI
CAS
CSCD
北大核心
2007年第z1期101-104,共4页
Journal of Engineering Thermophysics
基金
国家自然科学基金项目资助(No.5047028)
关键词
涡轮
冷气掺混
组分扩散
变比热
turbine
coolant mixing
component diffusion
variable heat specific
