航空燃气轮机地面用改型的热力性能计算

THE PERFORMANCE EVALUATION OF AERODERIVATIVE GAS TURBINES

一、前言 燃气轮机是20世纪发展起来的新型动力机械,具有热效率高、单位质量(或体积)的功率大、起动迅速、自动化程度高等优点。从50年代开始逐步在航空领域取得优势,在作战飞机、运输机、直升机和其他飞机上大部或全部取代了传统的活塞式发动机,成为当前最重要的航空动力。地面燃气轮机用于电力、石油、化工、冶金等多种工业部门和舰船、车辆等运输机械上。不仅吸取了航空燃气轮机的先进技术和科研成果。

The performance of the gas turbines derived from turboshaft or turbopeller engines can be calculated by the computer programs of the design and off-design point performance of original aero-engines. For the gas turbines derived from turbojet or turbofan engines the nozzle should be removed and the power turbine should be designed. We introduced the coupling functions to describe the variation of the gas turbine component characteristics, and investigated the influence of the component characteristic variation on the gas turbine performance and other components by the solution of the non-linear equations including the coupling functions.