Design factors for stable lean premix combustion

Richards, G A; Yip, M J; Gemmen, R S

Title: Design factors for stable lean premix combustion

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Abstract

The Advanced Turbine Systems (ATS) program includes the development of low-emission combustors. Low emissions have already been achieved by premixing fuel and air to avoid the hot gas pockets produced by nozzles without premixing. While the advantages of premixed combustion have been widely recognized, turbine developers using premixed nozzles have experienced repeated problems with combustion oscillations. Left uncontrolled, these oscillations can lead to pressure fluctuations capable of damaging engine hardware. Elimination of such oscillations is often difficult and time consuming - particularly when oscillations are discovered in the last stages of engine development. To address this issue, METC is studying oscillating combustion from lean premixing fuel nozzles. These tests are providing generic information on the mechanisms that contribute to oscillating behavior in gas turbines. METC is also investigating the use of so-called {open_quotes}active{close_quotes} control of combustion oscillations. This technique periodically injects fuel pulses into the combustor to disrupt the oscillating behavior. Recent results on active combustion control are presented in Gemmen et al. (1995) and Richards et al. (1995). This paper describes the status of METC efforts to avoid oscillations through simple design changes.

Authors:: Richards, G A; Yip, M J; Gemmen, R S

Publication Date:: Sun Oct 01 00:00:00 EDT 1995

Research Org.:: USDOE Morgantown Energy Technology Center (METC), WV (United States); USDOE Assistant Secretary for Energy Efficiency and Renewable Energy, Washington, DC (United States). Office of Industrial Technologies

OSTI Identifier:: 269490

Report Number(s):: DOE/METC-96/1023-Vol.1; CONF-9510109-Vol.1
ON: DE96000561; TRN: 96:002471-0013

Resource Type:: Conference

Resource Relation:: Conference: Advanced turbine systems (ATS) annual review, Morgantown, WV (United States), 17-18 Oct 1995; Other Information: PBD: Oct 1995; Related Information: Is Part Of Proceedings of the Advanced Turbine Systems Annual Program Review meeting. Volume 1; PB: 216 p.

Country of Publication:: United States

Language:: English

Subject:: 20 FOSSIL-FUELED POWER PLANTS; 33 ADVANCED PROPULSION SYSTEMS; GAS TURBINE POWER PLANTS; GAS TURBINES; COMBUSTORS; DESIGN; COMBUSTION; NOZZLES; OPERATION; MIXING

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                    Richards, G A, Yip, M J, and Gemmen, R S. Design factors for stable lean premix combustion.  United States: N. p., 1995. 
        Web.

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                    Richards, G A, Yip, M J, & Gemmen, R S. Design factors for stable lean premix combustion.  United States.

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                    Richards, G A, Yip, M J, and Gemmen, R S. 1995.  
        "Design factors for stable lean premix combustion".  United States.  https://www.osti.gov/servlets/purl/269490.

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@article{osti_269490,

  title        = {Design factors for stable lean premix combustion},

  author       = {Richards, G A and Yip, M J and Gemmen, R S},

  abstractNote = {The Advanced Turbine Systems (ATS) program includes the development of low-emission combustors. Low emissions have already been achieved by premixing fuel and air to avoid the hot gas pockets produced by nozzles without premixing. While the advantages of premixed combustion have been widely recognized, turbine developers using premixed nozzles have experienced repeated problems with combustion oscillations. Left uncontrolled, these oscillations can lead to pressure fluctuations capable of damaging engine hardware. Elimination of such oscillations is often difficult and time consuming - particularly when oscillations are discovered in the last stages of engine development. To address this issue, METC is studying oscillating combustion from lean premixing fuel nozzles. These tests are providing generic information on the mechanisms that contribute to oscillating behavior in gas turbines. METC is also investigating the use of so-called {open_quotes}active{close_quotes} control of combustion oscillations. This technique periodically injects fuel pulses into the combustor to disrupt the oscillating behavior. Recent results on active combustion control are presented in Gemmen et al. (1995) and Richards et al. (1995). This paper describes the status of METC efforts to avoid oscillations through simple design changes.},

  doi          = {},

  url          = {https://www.osti.gov/biblio/269490},
  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {Sun Oct 01 00:00:00 EDT 1995},

  month        = {Sun Oct 01 00:00:00 EDT 1995}

}

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