Topological Studies of Three Dimensional Flows in a High Pressure Compressor Stator Blade Row Without and With Boundary Layer Aspiration
This paper presents a numerical study of the flow topologies of three dimensional flows in a high pressure compressor stator blade row without and with boundary layer aspiration on the hub wall. The stator blade is representative of the first stage of a high pressure compressor operating under transonic inlet conditions and the blade design encourages development of highly complex three dimensional flows. The blade has a small tip clearance, a constraint imposed by the experimental setup. The CFD studies show progressive increase of hub corner stall with increase in incidence. Aspiration is implemented on the hub wall via a slot in the corner between the hub wall and the suction surface. The CFD studies show aspiration to be sensitive to the suction flow rate; lower rate leads to very complex flow structures and increased level of losses whereas higher rate renders aspiration effective for control of hub corner separation. The flow topologies are studied by trace of skin friction lines on the walls of hub and blade. The nature of flow can be explained by the topological rules of closed separation. Furthermore, a deeper analysis is done for a particular case with advanced criterion of Surana et al. 1, 2 to test the non degeneracy of critical points in the flow field.
high pressure compressor flow topologies of three dimensional flows boundary layer aspiration.
Ankit Sachdeva Francis Leboeuf
Ecole Centrale de Lyon LMFA Ecully, France Ecole Centrale de Lyon LMFA, UMR CNRS 5509, Universite de Lyon Ecully, France
国际会议
The 3rd International Symposium on Jet Propulsion and Power Engineering(第三届喷气推进与动力工程国际会议 ISJPPE)
南京
英文
226-235
2010-09-13（万方平台首次上网日期，不代表论文的发表时间）