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Modelling the Formation of Oxides of Nitrogen in Premix Combustion by Extending Tabulated Chemistry With Algebraic Relations

[+] Author Affiliations
Frederic B. A. Collonval, Wolfgang Polifke

Technische Universität München, Garching b. München, Germany

Paper No. GT2014-27293, pp. V04BT04A062; 10 pages
doi:10.1115/GT2014-27293
From:
  • ASME Turbo Expo 2014: Turbine Technical Conference and Exposition
  • Volume 4B: Combustion, Fuels and Emissions
  • Düsseldorf, Germany, June 16–20, 2014
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-4569-1
  • Copyright © 2014 by ASME

abstract

Models of finite rate combustion chemistry based on tabulation have been found to be efficient and accurate for a broad range of fuel and flame configurations. However, the modelling of formation of oxides of nitrogen remains a challenging issue. Even recent developments that take into account heat losses do not provide accurate prediction of NOx species despite a very good match for major species and temperature. The present paper introduces a model based on a chemical lookup-table for the NO formation rate in the preheat, initiation and fuel consumption region of a premix flame combined with algebraic relations in the post-flame area, thus reducing advantageously the tabulated information. This model is applied to a premixed laminar burner and compared to previous models based on tabulated chemistry.

Copyright © 2014 by ASME

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