摘要
针对作者提出的轴流压气机非定常两代流型———非定常自然流型(UNFT)和非定常耦合流型(UCFT)———概念,本文进行了数值模拟和试验两个方面的验证。从数值模拟结果来看,实现非定常耦合流型后,对应非定常流场的时空结构将由无序状态向有序状态转化,流场的时均性能也能得到较大提高。环形叶栅声激励和PIV测量的实验结果亦证实了这一结论。
In order to validate the concept of two generations unsteady flow type-unsteady natural low type (UNFT)and unsteady cooperative flow type(UCFT)-in axial flow compressor proposed by authors, numerical simulation and experiments are done. It can be seen from the results of numerical simulation that the spacetime structure of unsteady flow would translate from chaotic state to orderly state and the time-average performance of flow field can be improved greatly when UCFT is realized. These conclusions also have been validated by our experiments of acoustical excitation and PIV measurement.
出处
《航空学报》
EI
CAS
CSCD
北大核心
2005年第1期1-7,共7页
Acta Aeronautica et Astronautica Sinica
基金
国家自然科学基金(10072008)
高等学校博士学科点专项科研基金(2000000615)资助项目
关键词
流型
非定常分离流
非定常自然流型
非定常耦合流型
轴流压气机
flow type
unsteady separate flow
unsteady natural flow type(UNFT)
unsteady cooperative flow type(UCFT)
axial flow compressor