Combustion oscillation control by cyclic fuel injection

Richards, G A; Yip, M J; Robey, E; Cowell, L; Rawlins, D

doi:10.1115/1.2815580

Title: Combustion oscillation control by cyclic fuel injection

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Abstract

A number of recent articles have demonstrated the use of active control to mitigate the effects of combustion instability in afterburner and dump combustor applications. In these applications, cyclic injection of small quantities of control fuel has been proposed to counteract the periodic heat release that contributes to undesired pressure oscillations. This same technique may also be useful to mitigate oscillations in gas turbine combustors, especially in test rig combustors characterized by acoustic modes that do not exist in the final engine configuration. To address this issue, the present paper reports on active control of a subscale, atmospheric pressure nozzle.combustor arrangement. The fuel is natural gas. Cyclic injection of 14 percent control fuel in a premix fuel nozzle is shown to reduce oscillating pressure amplitude by a factor of 0.30 (i.e., {minus}10 dB) at 300 Hz. Measurement of the oscillating heat release is also reported.

Authors:

Richards, G A; Yip, M J; Robey, E ^[1]; Cowell, L; Rawlins, D ^[2]

Morgantown Energy Technology Center, WV (United States)
Solar Turbines, Inc., San Diego, CA (United States)

Publication Date:: Tue Apr 01 00:00:00 EST 1997

Sponsoring Org.:: USDOE

OSTI Identifier:: 522391

Report Number(s):: CONF-950629-
Journal ID: JETPEZ; ISSN 0742-4795; TRN: IM9739%%112

Resource Type:: Journal Article

Journal Name:: Journal of Engineering for Gas Turbines and Power

Additional Journal Information:: Journal Volume: 119; Journal Issue: 2; Conference: 40. International gas turbine and aeroengine congress and exposition, Houston, TX (United States), 5-8 Jun 1995; Other Information: PBD: Apr 1997

Country of Publication:: United States

Language:: English

Subject:: 03 NATURAL GAS; 42 ENGINEERING NOT INCLUDED IN OTHER CATEGORIES; COMBUSTION CONTROL; GAS TURBINES; STABILIZATION; NATURAL GAS; OSCILLATIONS; DAMPING

Citation Formats


                    Richards, G A, Yip, M J, Robey, E, Cowell, L, and Rawlins, D. Combustion oscillation control by cyclic fuel injection.  United States: N. p., 1997. 
        Web.  doi:10.1115/1.2815580.

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                    Richards, G A, Yip, M J, Robey, E, Cowell, L, & Rawlins, D. Combustion oscillation control by cyclic fuel injection.  United States.  https://doi.org/10.1115/1.2815580

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                    Richards, G A, Yip, M J, Robey, E, Cowell, L, and Rawlins, D. 1997.  
        "Combustion oscillation control by cyclic fuel injection".  United States.  https://doi.org/10.1115/1.2815580.

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@article{osti_522391,

  title        = {Combustion oscillation control by cyclic fuel injection},

  author       = {Richards, G A and Yip, M J and Robey, E and Cowell, L and Rawlins, D},

  abstractNote = {A number of recent articles have demonstrated the use of active control to mitigate the effects of combustion instability in afterburner and dump combustor applications. In these applications, cyclic injection of small quantities of control fuel has been proposed to counteract the periodic heat release that contributes to undesired pressure oscillations. This same technique may also be useful to mitigate oscillations in gas turbine combustors, especially in test rig combustors characterized by acoustic modes that do not exist in the final engine configuration. To address this issue, the present paper reports on active control of a subscale, atmospheric pressure nozzle.combustor arrangement. The fuel is natural gas. Cyclic injection of 14 percent control fuel in a premix fuel nozzle is shown to reduce oscillating pressure amplitude by a factor of 0.30 (i.e., {minus}10 dB) at 300 Hz. Measurement of the oscillating heat release is also reported.},

  doi          = {10.1115/1.2815580},

  url          = {https://www.osti.gov/biblio/522391},
  journal      = {Journal of Engineering for Gas Turbines and Power},
number       = 2,

  volume       = 119,

  place        = {United States},

  year         = {Tue Apr 01 00:00:00 EST 1997},

  month        = {Tue Apr 01 00:00:00 EST 1997}

}

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