小型涡扇发动机特性计算收敛性方法研究  

Research on Convergence Method of Characteristic Calculation of Small Turbofan Engine

作　　者：朱闪闪 曹永华 谢中敏 ZHU Shanshan;CAO Yonghua;XIE Zhongmin(School of Aeronautical Engineering,Jiangsu Aviation Technical College,Zhenjiang Jiangsu 212134,China)

机构地区：[1]江苏航空职业技术学院航空工程学院,江苏镇江212134

出　　处：《装备制造技术》2021年第11期87-91,共5页Equipment Manufacturing Technology

基　　金：2021年度院级课题资助项目(JATC21010113)。

摘　　要：基于Matlab/Simulink仿真环境,利用部件法对某型民用小推力、大涵道比齿轮传动发动机(Geared Turbofan-GTF)发动机进行建模,在此模型的基础上,建立发动机的流量连续,功率平衡稳态共同工作方程,选取高、低压转速,各旋转部件的压比为初猜变量对方程进行设计点求解。对求解过程中稳态收敛性问题进行分析并提出相应的措施来提高求解的收敛性,结果表明,在DGEN380小型涡扇发动机应用改善后的算法,发动机特性计算的收敛性和收敛速度得到了提高,为航空发动机模型的应用奠定了基础。Based on the matlab/simulink simulation environment,a civil low-thrust,high bypass ratio geared engine(Geared Turbofan-GTF)engine is modeled using the component method.Based on this model,the engine's flow is continuously established and power is balanced.Steady-state common operating equations,select high and low pressure speeds,the pressure ratio of each rotating part is the initial guess variable to solve the equation at the design point.The steady-state convergence problem in the solution process is analyzed and corresponding measures are proposed to improve the convergence of the solution.

关 键 词：发动机建模 非线性方程组 稳态求解 收敛性 

分 类 号：V231.3[航空宇航科学与技术—航空宇航推进理论与工程]