摘要
利用商用Numeca软件模拟了一个1.5级压气机中的时序效应现象,研究了导叶-静子周向相对位置变化时中间转子叶片表面非定常气动力及压力系数的变化。该1.5级压气机为南航低速压气机试验器(LSC)的简化结构,各排叶片数之比为1:1:1。为了孤立分析尾迹和势扰动的影响,还进行了导-转和转-静结构的计算。结果表明,通过调整导叶-静子的周向相对位置,可以使中间转子叶片表面非定常气动力的一阶响应幅值显著减小。
An investigation of clocking effect in a 1.5-stage compressor was performed using NUMECA software, the simulation was focused on the influence of the relative circumferential position of the IGV and the stator blade on the rotor unsteady aerodynamic force and the surface pressure coefficient profile. The configuration with a blade count ratio of 1：1：1 was a simplified pattern of NUAA LSC. In order to analyze the influence of the upstream wakes and the downstream potential effect respectively, the IGV-rotor and rotor-stator configurations were also simulated. The results show that the rotor unsteady aerodynamic force can be reduced prominently when the relative circumferential position of the IGV and the stator blade altered.
出处
《燃气涡轮试验与研究》
2007年第1期21-26,60,共7页
Gas Turbine Experiment and Research
关键词
压气机
时序效应
压力系数
非定常气动力
compressor
clocking effect
pressure coefficient
unsteady aerodynamic force
