针对求解分排涡扇发动机非线性方程组过程中出现的喷管进入无意义工作范围导致计算发散的问题。在传统的牛顿法中结合罚函数法,提出了一种新的非线性方程组求解方法。对某大涵道比分排涡扇发动机进行了仿真计算验证,并且将计算结果、收敛情况和传统的牛顿法进行了对比。结果表明,能够较好地处理喷管进入无意义工作范围导致计算发散的问题,改善了计算的收敛性。 Aiming at the problem of calculating the divergence of the nozzle into the meaningless working range in the process of solving the nonlinear equation of the turbofan engine. In the traditional Newton method combined with penalty function method, a new method of solving nonlinear equations is proposed. The simulation and verification of a large bypass tracked turbofan engine were carried out. The calculated results and the convergence were compared with the traditional Newton method. The results show that the nozzle divergence into the meaningless working range can lead to the calculation divergence problem and improve the convergence of the calculation.