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.
出处
《燃气涡轮试验与研究》
北大核心
2013年第2期24-27,共4页
Gas Turbine Experiment and Research
