摘要
采用标准k-ε两方程模型对静盘和转盘带有不同螺栓数目的转-静盘腔内的气动热力问题进行了数值模拟研究。在转静盘腔结构中,静盘和转盘的螺栓数目相同。由于盘腔流动结构具有周向周期性,取盘腔的1/24作为计算域。研究发现:旋转雷诺数、预旋角、静盘和转盘所带的不同的螺栓数都不同程度地影响盘腔内的流动和预旋系统的温降效果。静盘和转盘所带的螺栓所产生的搅拌作用改变了预旋系统的压降,对腔体内的气流流动和预旋系统的温降效果有较大的影响。
Numerical simulation was carried on of aero-thermo dynamics in a rotor-stator cavity with number of bohs fixed on stator and rotor by using standard k-ε two-equation model. In this rotor-stator cavity, it is the same number of baits in stator and rotor. Because of the periodic feature of the flow structure, one twenty-fourth of the cavity is considered as the computational field. The result shows that the rotating Reynolds number, the angel of the pre-swirl, the different amounts of bolts in stator and rotor have different effects on the flow characteristics in the rotor-stator cavity and temperature drop of this pre-swirl system. The stirring effect of bolts in stator and rotor, changing pressure drop, have influences on the flow in a rator-stator cavity and temperature drop performance.
出处
《机械设计与制造》
北大核心
2014年第9期211-213,217,共4页
Machinery Design & Manufacture
关键词
航空发动机
预旋
转静盘腔
温降
数值模拟
螺栓数目
Aeroengine
Pre-Swirl
Rotor-Stator Cavity
Temperature Drop
Numerical Analysis
Number of Bolts
