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用部件法建立双轴混排不加力涡扇发动机高空起动模型,并采取迭代法进行求解,仿真计算时考虑了发动机高空起动时的高低压转子匹配关系以及起动初猜值的选取,解决了迭代法对初值敏感的问题,仿真结果表明所建立的模型有较快的收敛速度并能较准确地模拟高空起动过程。
By using the component method, the bistatic hybrid turbofan non-forcing turbofan engine model is established and solved by the iterative method. The matching between high and low voltage rotors and the initial guessing value are considered in the simulation. Iteration method is sensitive to the initial value. The simulation results show that the established model has a faster convergence rate and can simulate the high altitude starting process more accurately.