Results of a model for premixed combustion oscillations Metadata

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Title

  • Main Title Results of a model for premixed combustion oscillations

Creator

  • Author: Janus, M.C.
    Creator Type: Personal
  • Author: Richards, G.A.
    Creator Type: Personal

Contributor

  • Sponsor: United States. Department of Energy.
    Contributor Type: Organization
    Contributor Info: USDOE, Washington, DC (United States)

Publisher

  • Name: Morgantown Energy Technology Center
    Place of Publication: Morgantown, West Virginia
    Additional Info: USDOE Morgantown Energy Technology Center, WV (United States)

Date

  • Creation: 1996-09-01

Language

  • English

Description

  • Content Description: Combustion oscillations are receiving renewed research interest due to increasing use of lean premix (LPM) combustion to gas turbines. A simple, nonlinear model for premixed combustion is described in this paper. The model was developed to help explain specific experimental observations and to provide guidance for development of active control schemes based on nonlinear concepts. The model can be used to quickly examine instability trends associated with changes in equivalence ratio, mass flow rate, geometry, ambient conditions, etc. The model represents the relevant processes occurring in a fuel nozzle and combustor which are analogous to current LPM turbine combustors. Conservation equations for the fuel nozzle and combustor are developed from simple control volume analysis, providing a set of ordinary differential equations that can be solved on a personal computer. Combustion is modeled as a stirred reactor, with a bimolecular reaction rate between fuel and air. A variety of numerical results and comparisons to experimental data are presented to demonstrate the utility of the model. Model results are used to understand the fundamental mechanisms which drive combustion oscillations, effects of inlet air temperature and nozzle geometry on instability, and effectiveness of open loop control schemes.
  • Physical Description: 31 p.

Subject

  • STI Subject Categories: 33 Advanced Propulsion Systems
  • Keyword: Gas Turbines
  • STI Subject Categories: 42 Engineering Not Included In Other Categories
  • Keyword: Oscillations
  • Keyword: Nozzles
  • Keyword: Combustors
  • STI Subject Categories: 20 Fossil-Fueled Power Plants

Source

  • Conference: 1996 international symposium combustion in industry, Baltimore, MD (United States), 30 Sep - 2 Oct 1996

Collection

  • Name: Office of Scientific & Technical Information Technical Reports
    Code: OSTI

Institution

  • Name: UNT Libraries Government Documents Department
    Code: UNTGD

Resource Type

  • Article

Format

  • Text

Identifier

  • Other: DE96013547
  • Report No.: DOE/METC/C--96/7246
  • Report No.: CONF-9609233--1
  • DOI: 10.2172/379049
  • Office of Scientific & Technical Information Report Number: 371180
  • Archival Resource Key: ark:/67531/metadc675718

Note

  • Display Note: OSTI as DE96013547