Analysis of Pressure Effect on NOx Emission Predicted by EDC Models Adopted in a Model Gas Turbine Combustor

Soon Been Park; Yuangang Wang; Chae Hoon Sohn

doi:10.15231/jksc.2024.29.2.020

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2024 Vol.29, Issue 2 Preview Page Next Page

Research Article

Analysis of Pressure Effect on NOx Emission Predicted by EDC Models Adopted in a Model Gas Turbine Combustor 모형 가스터빈 연소기에서 EDC 수치 모델 선택에 따른 NOx 배출에 미치는 압력 효과 분석

30 June 2024. pp. 20-26

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Abstract

Pressure effects on NOx emission in a gas turbine combustor are numerically investigated using the EDC model in the study. To validate the combustion analysis involving air-fuel mixing and chemical reactions under turbulent conditions, we adopt two models of the Standard EDC and Partially Stirred Reactor EDC models and compare one model with the other. As pressure increases, NOx emission decreases slightly to 5.87 ppm with the Standard EDC model adopted, while it significantly increases to 37 ppm with the Partially Stirred Reactor EDC model adopted. While the temperature difference between the two EDC models is negligibly small, NOx emissions predicted by the Partially Stirred Reactor EDC model increase geometrically. This confirms that temperature is not a primary parameter in NOx emissions when comparing EDC models. The correlation between factors expressed by functions of chemical and mixing time scales can be considered to find effects of pressure on NOx emissions.

Keywords

Eddy dissipation concept

Partially stirred reactor

Pressure effects

NOx emissions

References

H.Y. Shih, C.R. Liu, A computational study on the combustion of hydrogen/methane blended fuels for a micro gas turbines, Int. J. Hydrogen Energy, 39 (2014) 15103-15115.

10.1016/j.ijhydene.2014.07.046

D. Veynante, L. Vervisch, Turbulent combustion modeling, Prog. Energy Combust. Sci., 28 (2002) 193-266.

10.1016/S0360-1285(01)00017-X

D.B Spalding, Mixing and chemical reaction in steady confined turbulent flames, Symposium (International) on Combustion, 13 (1971) 649-657.

10.1016/S0082-0784(71)80067-X

B.F. Magnussen, B.H. Hjertager, On mathematical modeling of turbulent combustion with special emphasis on soot formation and combustion, Symposium (International) on Combustion, 16 (1977) 719-729.

10.1016/S0082-0784(77)80366-4

I.S. Ertesvåg, B.F. Magnussen, The eddy dissipation turbulence energy cascade model, Combust. Sci. Technol., 159 (2000) 213- 235.

10.1080/00102200008935784

L. Kjäldman, A. Brink, M. Hupa, Micro mixing time in the eddy dissipation concept, Combust. Sci. Technol., 154 (2000) 207-227.

10.1080/00102200008947277

F.C. Christo, B.B. Dally, Modeling turbulent reacting jets issuing into a hot and diluted coflow, Combust. Flame, 142 (2005) 117-129.

10.1016/j.combustflame.2005.03.002

G.P. Smith, D.M. Golden, M. Frenklach, N.W. Moriarty, B. Eiteneer, M. Goldenberg, C.T. Bowman, R.K. Hanson, S. Song, W.C. Gardiner Jr., V.V. Lissianski, Z. Qin, GRI-mech 3.0, Available at: <http://www.me.berkeley.edu/gri_mech/>, 1999.

J. Park, H. Kim, A Modelling Study on NOx Formation of Methane-air Lean Premixed Combustion in High-pressure Perfectly-stirred Reactor, In KSAE Fall Conference Proceedings, (2006) 404-411.

Fluent, ANSYS Fluent Theory Guide, Release 2023 R2, ANSYS Inc, 2023.

Z. Li, M. Ferrarotti, A. Cuoci, A. Parente, Finite-rate chemistry modelling of non-conventional combustion regimes using a Partially-Stirred Reactor closure: Combustion model formulation and implementation details, Applied energy, 225 (2018) 637-655.

10.1016/j.apenergy.2018.04.085

J. Chomiak, Combustion a study in theory, fact and application, (1990).

Information

Publisher :The Korean Society of Combustion
Publisher(Ko) :한국연소학회
Journal Title :Journal of the Korean Society of Combustion
Journal Title(Ko) :한국연소학회지
Volume : 29
No :2
Pages :20-26
Received Date : 2024-03-18
Revised Date : 2024-06-10
Accepted Date : 2024-06-10
DOI :https://doi.org/10.15231/jksc.2024.29.2.020

Journal of the Korean Society of Combustion ISSN:1226-0959(Print) 2466-2089(Online) 한국연소학회지

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