某型燃气轮机燃烧室性能数值模拟

摘要

Numerical simulation of combustor performance of QD128 gas turbine was finished using CFD method. Hie results indicated: Flow distribution of combustor is reasonable, velocity field of combustor meets the design requirements. Outlet average temperature is 1 298K,hot spot temperature is 1 486K,the temperature distribution curve meets the design requirements,and OTDF =0.280,RTDF =0.086,which are slightly higher than the level of prototype aircrafis. The results enrich the design data of QD128 gas turbine,and provide reliable reference for the running and improving.%应用CFD方法对航改QD128燃气轮机燃烧室性能进行了数值模拟.模拟结果表明:燃烧室流量分配设计基本合理,燃烧室内流场分布符合设计规律；燃烧室出口平均温度为1 298K,热点温度1 486K,径向温度分布曲线符合设计要求,OTDF=0.280,RTDF=0.086,略高于航机水平.模拟结果丰富了QDI28燃机性能指标,为该机的运行、改进提供了可靠的参考依据.