摘要
本文提出用实测的高、低压转速曲线，取代燃烧室或高压涡轮特性图，做为描述双轴涡喷发动机动态工作过程微分方程组的已知条件，使得该方程组能封闭求解．从而为双轴涡喷发动机的数值模拟提供了一个新方法．文中针对双轴涡喷发动机的某一动态过程，用本方法及现有方法进行了对比计算，结果表明，本方法可以有效模拟这一动态过程，并获得该过程的高压涡轮效率或燃烧效率，其误差最大不超过５％．由于该方法不需已知燃烧室或高压涡轮特性图，因此它可应用于机载武器发射时双轴涡喷发动机的动态过程的数值模拟．
Launch of on-board weapons makes it difficult to do two things well:(l)simulation of transient process of trubojct engine and(2)the determination of deviation of combustion efficiency and turbine efficiency from those given by standard characteristic maps.There still does not exist any good solution of thesetwo difficulties in the open literature.The solution of these two difficultics is presented in this paper. Essentially the authors'solution is to replace the characteristic maps by castly measured high a...
出处
《西北工业大学学报》
EI
CAS
CSCD
北大核心
1994年第2期196-200,共5页
Journal of Northwestern Polytechnical University
基金
航空科学基金
关键词
喷气发动机
燃烧效率
涡轮效率
数值模拟
动态过程
jet engine
combustion efficiency
turbine efficiency
numerical simulation
transient process
