Effects of End-Bend and Curved Blades on the Flow Field and Loss of a Compressor Linear Cascade in the Design Condition

作     者：KAN Xiaoxu WU Wanyang YANG Ling ZHONG Jingjun 

作者机构：Merchant Marine College Shanghai Maritime University 

出 版 物：《Journal of Thermal Science》 (热科学学报（英文版）)

年 卷 期：2019年第28卷第4期

页      面：801-810页

核心收录：

学科分类：07[理学] 0702[理学-物理学] 

基　　金：co-supported by the China Postdoctoral Science Foundation(Grant No.2017M621268) the National Natural Science Foundation of China(Grant Nos.51436002 and 51506020) 

主　　题：compressor linear cascade flow loss vortex structure curved blade end-bend blade design condition 

摘      要：Curved blade and end-bend blade are considered as effective passive control methods for improving the aerodynamic performance of a compressor cascade,and their applicability also needs to be further studied.A highly-loaded compressor linear cascade in the design condition was taken as the research objective in this *** simulation was used to study the positive and negative effects of these methods on the flow loss of the cascade by redistributing the vortex *** show that:the curved blade could reduce the flow loss to 2.55%,while the end-bend blade and the end-bend+curved blade increase it to 10.58%and 2.19%,*** positive effect of the curved blade weakens the strength and scale of Concentrated Shedding Vortex(CSV),which accounts for 59.2%of the total flow *** negative effect of the end-bend blade exacerbates the low-energy fluid clusters from the end wall and wake into ***,the end-bend+curved blade can take their own strengths,but it enhances the twisting motion of Passage Vortex(PV)and CSV,which makes it fail to reduce the flow ***,the positive and negative effects of these methods on the flow loss of a compressor cascade are much *** addition,we also predict the potential danger of the end-bend blade in the negative incidence conditions and provides some suggestion for future study.