多级涡轮工作流场的数值仿真研究  

Numeric Simulation on Multiple Stage Turbine Working Fluid Field

作　　者：詹洪飞 黄帅 杨欣毅[2] 

机构地区：[1]海军驻常州地区航空军事代表室,江苏常州213022 [2]海军航空工程学院飞行器工程系,山东烟台264001

出　　处：《系统仿真技术》2016年第2期118-122,共5页System Simulation Technology

摘　　要：利用计算流体力学的前处理软件,对某型涡轴发动机的燃气、自由涡轮进行了三维叶型建模。在考虑燃气比热变化、部件之间相互影响的基础上,通过燃气涡轮、自由涡轮流场的联合计算获得了多级涡轮工作流场的参数分布。计算结果表明:该小尺寸涡轮叶顶间隙对工作性能有显著影响,不同工作状态下燃气涡轮-支板-自由涡轮之间的匹配工作也会影响涡轮的工作效率。In this paper, we first developed three dimensional models for the gas turbine and free turbines of a certain type of turbo jet engine using computational fluid dynamics pre-treatment software. Under the consideration of varying specific heat ration and mutual effects of components, we obtained parameter distribution of multiple stage turbine fluid field. Simulation results indicate that the tip clearance of turbine blade has great impact on engine working performance. The matching of gas turbine-support plate-free turbine also affects turbine efficiency under different working condition.

关 键 词：涡轮 前处理 流场 数值仿真 

分 类 号：TK472[动力工程及工程热物理—动力机械及工程]