摘要
本文采用文献[3,4]所发展的滑移界面技术,求解了不同轴向间隙时某一透平级内的非定常流场,发现轴向间隙由0.152倍栅距变化到0.533倍栅距时,监测点速度u的相对振幅由26.27%下降为7.94%;速度v的相对振幅由21.34%下降到7.3%。计算结果表明轴向间隙的增大将使动/静叶排间的相互干扰作用减弱,从而使其内部非定常流动特性减小,为设计工作提供了参考依据。
An investigation has been implemented to simulate the effects of axial spacing on the unsteady rotor/stator interaction. In order to calculate the unsteady flow within a turbine stage simultaneously, a developed sliding interface technique is adopted in conjunction with non-orthogonal grids and non-staggered arrangement techniques. An implicit method is employed to deal with the coupling of velocity and pressure. Some incompressible rotor/stator interactions with low Reynolds number have been simulated under different axial spacing. The structure of vortexes occurred between rotor and stator blade rows have been showed in detail. The results show that increased axial spacing between blade rows in an axial turbine stage can decrease the unsteadiness of flow field.
出处
《工程热物理学报》
EI
CAS
CSCD
北大核心
2000年第5期584-586,共3页
Journal of Engineering Thermophysics
基金
国家教委留学回国人员科研启动基金!(No.1997[436])
西安交通大学研究生院博士学位论文基金!(DFXJU 1998-0
关键词
滑移界面
相干叶排
非定常流动
轴向间隙
sliding interface
rotor/stator interaction
unsteady flow, axial spacing