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以在建中的1.5级跨声压气机试验台所使用的压气机为研究对象,利用计算流体力学方法对其内部时序效应进行了研究.研究表明:静叶尾迹与出口导叶边界层中低能流体发生掺混时,掺混损失小,压气机效率高;静叶尾迹与出口导叶主流区中的高能流体掺混时,掺混损失大,压气机效率低,且最高效率与最低效率相差约0.4%;入口导叶与静叶间时序效应不明显.此外,得出了静叶-出口导叶轴向间隙与静叶-出口导叶间最佳时序位置的关系曲线.
Taking the compressor used in the 1.5-stage transonic compressor test bed under construction as the research object, the internal time-sequence effect was studied by computational fluid dynamics (CFD) method.The results show that the low-energy fluid in the vortex shedding and the exit guide vane boundary layer In the case of blending, the mixing loss is small and the compressor efficiency is high. When the vane trail is blended with the high-energy fluid in the outlet guide vane mainstream area, the blending loss is large and the compressor efficiency is low, and the difference between the maximum efficiency and the minimum efficiency is about 0.4%, and the timing effect between inlet guide vane and stator vane is not obvious.Furthermore, the relationship between the stator vane and the outlet guide vane axial clearance and the optimal timing position between vane and outlet guide vane is obtained.