The role of AVDR in linear cascade testing

作     者：Wing F.Ng Bo Song;Wing F.Ng

作者机构：Department of Mechanical EngineeringVirginia Polytechnic Instituteand State University 

出 版 物：《航空动力学报》 (Journal of Aerospace Power)

年 卷 期：2007年第22卷第6期

页      面：933-944页

核心收录：

学科分类：082502[工学-航空宇航推进理论与工程] 08[工学] 0802[工学-机械工程] 0825[工学-航空宇航科学与技术] 0701[理学-数学] 

主　　题：线性叶栅试验 轴向速度密度比 空气流动 叶栅特性 

摘      要：Linear cascade testing plays an important role in the research and development of turbomachinery and is widely used over the *** ideal cascade model of a turbomachinery blade row is *** actual linear cascade testing,the flow through the test section converges due to the development of the boundary layer and secondary flow along the sidewall surfaces of the test *** velocity density ratio(AVDR) is adopted to account for the deviation of the tested cascade flow from the ideal 2D *** numerous published cascade works,the influence of AVDR on cascade performance is seen to be complicated with many affecting factors,such as those related to cascade/blade geometry and flow ***,controlling AVDR is limited by the facility ***,real blade-to-blade flow in turbomachines is usually associated with AVDR greater than unity due to limited span of blades between the hub and shroud such that cascade testing without reducing AVDR could be favored *** these facets add complexity and diversification to the *** current paper reviews previous studies and results on *** understanding on the role of AVDR and recommendations on how to deal with it in linear cascade testing are provided.