Effects of the Leakage Flow Tangential Velocity in Shrouded Azial Compres sor Cascades
Although compressor blades have long been shrouded for aerodynamic and structural reasons, the importance of the leakage flow in the shrouded axial compressor has been investigated recently. However, the effects of the leakage tangential velocity variation on the blade passage flow are unknown. Therefore, this paper reports on an experimental investigation of the loss and flow turning in the blade passage in shrouded axial compressor cascades subject to the variation of the leakage tangential velocity. The newly found results are as follows. First, increasing the leakage tangential velocity reduces overall loss up to 32.6% compared to the reference case. Second, increasing the leakage tangential velocity spreads loss core in the pitch-wise direction. Thus, loss core becomes more two-dimensional. Third, increasing the leakage tangential velocity makes the near hub passage flow more radially uniform.
Shrouded azial compressor Leakage flow tangential velocity Total pressure loss Passage vortez
Jin Wook Kim Tongbeum Kim Seung Jin Song
Turbomachinery Laboratory, School of Mechanical and Aerospace Engineering, Seoul NationalUniversity, MOE Key Laboratory for Strength and Vibration, School of Aerospace, Xian Jiaotong University, Xian Turbomachinery Laboratory, School of Mechanical and Aerospace Engineering, Seoul National University
国际会议
北京
英文
1-6
2008-10-23（万方平台首次上网日期，不代表论文的发表时间）