带级间燃烧的涡轴发动机性能仿真

为了分析涡轮级间燃烧技术对常规涡轴发动机性能提升的潜力,针对两种带级间燃烧的涡轴发动机性能方案,分别建立了部件级稳态性能计算模型,并通过仿真对比分析了级间燃烧室不同温升及总压损失条件下发动机的整机性能,结果表明：级间燃烧室总压恢复系数和温升对单位功率和总功率影响较大,当级间燃烧室总压恢复系数为0.95、温升为200K时...

Performance simulation of turboshaft engines with interstage turbine burner

In order to analysis the turboshaft engine performance increase through interstage turbine burner (ITB),two component-level steady performance simulation models of turboshaft engines with ITB were developed.The performance variations of turboshaft engines with ITB were studied through simulation at different ITB temperature rise and total pressure loss.Results show that:The specific and total shaft power of turboshaft engines with ITB are sensitive to the ITB temperature rise and total pressure recovery coefficients.If the ITB total pressure recovery coefficient is 0.95 and temperature rise is 200K,while keeping the engine inlet air flow constant,the specific and total shaft power of turboshaft engine with ITB will increase 17%,and the specific fuel consumption will increase 11%.When the ITB temperature rise is high,it is necessary to enlarge free turbine nozzle area to improve the flow capability,so as to further increase the total shaft power and lower the free turbine inlet temperature;In general,it is better to set the ITB in turbine transition duct for more sufficient space and more excellent performance improvements.