Nagpurwala, QH and Guruprasad, SA and Girigoswami, H and Pai, BR (1995) Experimental and analytical studies of a transonic stator having controlled diffusion aerofoil with end bends. In: 12th ISABE - International Symposium on Air Breathing Engines, 10-15 Sept 1995, Melbourne, Australia.Full text not available from this repository.
A second generation, highly loaded stator having controlled diffusion airfoil (CDA) sections with end bends has been designed and tested in a transonic axial flow compressor test facility. The stator blade sections were obtained to match the rotor exit flow conditions that had been determined experimentally, and to impart a high turning of 35 deg, making the flow to leave the stator axially except near the end walls. Results of experimental performance evaluation have been compared with those obtained analytically by 3D time-marching Euler computations. Surface Mach number distribution typical of CDA blading has confirmed the applicability of a geometric design approach adopted for this stator. Flow visualization with fluorescent dyes has indicated a radially outward tendency of suction surface stream lines near the hub. The blade appears to be heavily loaded near the hub region, where refinement of the profile could improve the performance.
|Item Type:||Conference or Workshop Item (Paper)|
|Uncontrolled Keywords:||Controlled diffusion airfoil;Transonic axial flow compressor;Stator blade sections|
|Subjects:||AERONAUTICS > Aircraft Propulsion and Power|
|Division/Department:||Propulsion Division, Propulsion Division, Propulsion Division, Propulsion Division|
|Depositing User:||M/S ICAST NAL|
|Date Deposited:||26 Sep 2006|
|Last Modified:||11 Aug 2015 11:58|
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