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UNSTEADY AERODYNAMICS, AEROACOUSTICS AND AEROELASTICITY OF TURBOMACHINES Episode 7

Tham khảo tài liệu 'unsteady aerodynamics, aeroacoustics and aeroelasticity of turbomachines episode 7', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | 308 pressure PSI pressure PSI pressure PSI Figure 9. 105 surge event Kulite trace upstream and downstream of fan and in bypass duct Analysis of Unsteady Casing Pressure During Surge and Rotating Stall 309 Figure 10. Time trace of first surge cycle - a upstream Kulite b downstream of fan Kulites 310 Figure 11. Schematic of the pressure rise characteristic during surge 400 350 y 300 Ị_ c õ Ế 250 ỉn CD _. E 200 ì g 150 Ó I 100 50 0 0. d 5 r i 55 0.60 0.70 0.75 0.65 time seconds Upstream kulites 105 NRT 5th surqe cycle 1---1 I------1---1--1 ---1--r I---1 J I---r Figure 12. 5th and 6th surge cycle upstream Kulite showing axisymmetric .