风扇转子箍环与机匣间容腔的全三维数值模拟  

Numerical Investigation on Tip Ring-Cavity of Fan Rotor

作　　者：曹志鹏[1] 兰发祥[1] 张旭[1] 夏天[1] 

机构地区：[1]中国燃气涡轮研究院,四川成都610500

出　　处：《燃气涡轮试验与研究》2013年第2期24-27,共4页Gas Turbine Experiment and Research

摘　　要：转子箍环结构能减小风扇尖部振动,但引入箍环结构后形成的尖部泄漏流会影响高负荷风扇的气动性能。首次利用全三维数值模拟方法,研究了转子箍环结构对风扇性能的影响。模拟过程中,采用多块网格技术,生成转子箍环与机匣间容腔复杂几何结构的网格。结果显示:泄漏流对转子尖部流动及总性能参数影响很大;优化的转子机匣容腔结构可有效减少泄漏流,改善转子尖部流动,提高总性能参数。Tip ring structure can reduce the vibration of fan rotor, but the leakage caused by rotor ring has great influence on the aerodynamic performance of high-loading fan. In this paper, the effects of ring-cavity on fan performance were investigated by the three-dimensional numerical simulation method. Multi-block grid technology was employed for the complex mesh generation of ring-cavity geometric structures. The nu- merical results comparison of three different cavity configurations show that： the leakage could affect rotor tip flow field and the aerodynamic performance. The optimizing design of the rotor cavity configuration could reduce the mass of leakage; increase efficiency of rotor tip and improve fan aerodynamic performance.

关 键 词：航空发动机 风扇转子 箍环 机匣容腔 泄漏流 三维数值模拟 IHPTET 

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]