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doi: 10.3390/ijtpp7010010
handle: 10985/22698
Stall and surge are strong limitations in the operating range of compressors and thus one of the major limits of jet engine performance. A promising way to push the stability limit of compression machines is to inject a small amount of flow at the blade tip to alter the physical mechanism responsible for stall onset. This study focuses on the experimental performance of such a system. To do so, an axial compressor test bench was equipped with 40 actuators connected to an auxiliary pressurised air supply system. They were able to generate high-speed jet blowing just at the tip of the rotor blades. The opening of each actuator was controlled by an electromagnetic valve. This allowed generating continuous or pulsed jets with frequencies up to 500 Hz at different duty cycles. The performance of the control system was investigated for various control strategies, where the injected flow rate, the injection angle, the number of injectors, the jet frequency and the duty cycle were systematically varied. This paper is concluded by a study of the energy balance of the system for various configurations. To the best of the authors’ knowledge, this constitutes a rarely seen analysis in the literature.
Energy cost, Stall margin improvement, Sciences de l'ingénieur: Mécanique: Mécanique des fluides, Mechanical Engineering, axial compressor, Energy Engineering and Power Technology, Aerospace Engineering, Axial compressor, [SPI.MECA.MEFL] Engineering Sciences [physics]/Mechanics [physics.med-ph]/Fluids mechanics [physics.class-ph], stall margin improvement, tip blowing, active flow control, energy cost, axial compressor; active flow control; stall margin improvement; tip blowing; energy cost, TJ1-1570, Active flow control, Tip blowing, Mechanical engineering and machinery
Energy cost, Stall margin improvement, Sciences de l'ingénieur: Mécanique: Mécanique des fluides, Mechanical Engineering, axial compressor, Energy Engineering and Power Technology, Aerospace Engineering, Axial compressor, [SPI.MECA.MEFL] Engineering Sciences [physics]/Mechanics [physics.med-ph]/Fluids mechanics [physics.class-ph], stall margin improvement, tip blowing, active flow control, energy cost, axial compressor; active flow control; stall margin improvement; tip blowing; energy cost, TJ1-1570, Active flow control, Tip blowing, Mechanical engineering and machinery
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