EXPERIMENTAL INVESTIGATION OF THE BUZZ CYCLE IN A SUPERSONIC AXISYMMETRIC INTAKE

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SOLTANI MOHAMMAD REZA; ABEDI MAHDI; SEPAHI YOUNSI JAVAD

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Paper Information

Journal: Modares Mechanical Engineering Year:2015 | Volume:14 | Issue:16 Page(s): 311-320

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Title

EXPERIMENTAL INVESTIGATION OF THE BUZZ CYCLE IN A SUPERSONIC AXISYMMETRIC INTAKE

Author(s)

SOLTANI MOHAMMAD REZA | ABEDI MAHDI | SEPAHI YOUNSI JAVAD | Issue Writer Certificate

Keywords

AIR INTAKEQ2

SUPERSONIC FLOWQ2

BUZZQ2

SHOCK WAVEQ2

OSCILLATION FREQUENCYQ2

Abstract

An extensive experimental study has been conducted to investigate the performance and stability of a supersonic axisymmetric mixed compression AIR INTAKE designed for a free stream Mach number of 2.0. Unstable flow conditions, where the self-sustained oscillations of the shocks waves occur, have been studied in this investigation. Aside from the BUZZ triggering mechanism, the paper describes the flow phenomenon sequences during the BUZZ cycle by means of the shadowgraph pictures and via high frequency pressure transducers. Results showed that the pressure inside the intake decreases and increases sequently during the BUZZ cycle. The intake becomes almost empty (its mass flow rate decreases) as the SHOCK WAVE moves upstream toward the intake tip. When the SHOCK WAVEs stand at its most upstream location, the pressure inside the intake reaches its minimum value. This low pressure condition causes the SHOCK WAVE to move toward the intake and consequently the intake pressure increases again. As the pressure inside the intake increases, the SHOCK WAVE moves upstream. The intake pressure reaches its maximum value when the SHOCK WAVE stands at the intake entrance and the BUZZ cycle is then completed.

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APA: Copy

SOLTANI, MOHAMMAD REZA, ABEDI, MAHDI, & SEPAHI YOUNSI, JAVAD. (2015). EXPERIMENTAL INVESTIGATION OF THE BUZZ CYCLE IN A SUPERSONIC AXISYMMETRIC INTAKE. MODARES MECHANICAL ENGINEERING, 14(16), 311-320. SID. https://sid.ir/paper/177862/en

Vancouver: Copy

SOLTANI MOHAMMAD REZA, ABEDI MAHDI, SEPAHI YOUNSI JAVAD. EXPERIMENTAL INVESTIGATION OF THE BUZZ CYCLE IN A SUPERSONIC AXISYMMETRIC INTAKE. MODARES MECHANICAL ENGINEERING[Internet]. 2015;14(16):311-320. Available from: https://sid.ir/paper/177862/en

IEEE: Copy

MOHAMMAD REZA SOLTANI, MAHDI ABEDI, and JAVAD SEPAHI YOUNSI, “EXPERIMENTAL INVESTIGATION OF THE BUZZ CYCLE IN A SUPERSONIC AXISYMMETRIC INTAKE,” MODARES MECHANICAL ENGINEERING, vol. 14, no. 16, pp. 311–320, 2015, [Online]. Available: https://sid.ir/paper/177862/en

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