SURGE AVOIDANCE IN GAS TURBINES

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KHALEGHI H.; BROUMAND M.; MESGAR POUR TOUSI A.

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Journal: Journal of Aerospace Mechanics Year:2006 | Volume:2 | Issue:2 Page(s): 97-105

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Information Journal Paper

Title

SURGE AVOIDANCE IN GAS TURBINES

Author(s)

KHALEGHI H. | BROUMAND M. | MESGAR POUR TOUSI A. | Issue Writer Certificate

Keywords

SURGE AVOIDANCEQ3

GAS TURBINEQ3

ACTIVE CONTROLQ2

Abstract

In this work, the transient process of surge in a GAS TURBINE engine has been investigated numerically. A one-dimensional stage-by-stage mathematical model has been developed, which can describe the system behavior during aerodynamic instabilities. It is demonstrated that, these instabilities can be stabilized by the use of ACTIVE CONTROL strategies, such as air bleeding and air injection. Both steady and unsteady ACTIVE CONTROL systems were considered. In the steady case, mass is removed at a fixed rate from the diffuser, or mass is injected at a fixed rate into the first stage of the compressor. In the unsteady control, the rate of bleeding or injection is linked with the amplitude and the frequency of the upstream pressure disturbances. Results show that both steady and unsteady strategies eliminate surge disturbances and suppress the instabilities. Therefore, they extend the stable operating range of compressor. It is shown that smaller amount of compressed air needs to be removed in the unsteady control case. Also, a variable area diffuser is shown to be able of suppressing surge instabilities. ACTIVE CONTROL of instabilities, caused by sinusoidal perturbations of the inlet total pressure, was also investigated, which showed to destabilize the stable operating condition at the design point.

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APA: Copy

KHALEGHI, H., BROUMAND, M., & MESGAR POUR TOUSI, A.. (2006). SURGE AVOIDANCE IN GAS TURBINES. AEROSPACE MECHANICS JOURNAL, 2(2), 97-105. SID. https://sid.ir/paper/101796/en

Vancouver: Copy

KHALEGHI H., BROUMAND M., MESGAR POUR TOUSI A.. SURGE AVOIDANCE IN GAS TURBINES. AEROSPACE MECHANICS JOURNAL[Internet]. 2006;2(2):97-105. Available from: https://sid.ir/paper/101796/en

IEEE: Copy

H. KHALEGHI, M. BROUMAND, and A. MESGAR POUR TOUSI, “SURGE AVOIDANCE IN GAS TURBINES,” AEROSPACE MECHANICS JOURNAL, vol. 2, no. 2, pp. 97–105, 2006, [Online]. Available: https://sid.ir/paper/101796/en

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