Evaluation of CH4/NOx Reduced Mechanisms Used for Modeling Lean Premixed Turbulent Combustion of Natural Gas

Authors

Hemant P. Mallampalli, Brigham Young University - Provo
Thomas H. Fletcher, Brigham Young UniversityFollow
J Y. Chen, University of California, Berkeley

Keywords

Natural Gas Combustion, Reduced Mechanisms, Lean Premixed

Abstract

This study has identified useful reduced kinetic schemes that can be used in comprehensive multi-dimensional gas-turbine combustor models. Reduced mechanisms lessen computational cost and possess the capability to accurately predict the overall flame structure, including gas temperatures and key intermediate species such as CH₄, CO and NO_x. In this study, four-new global mechanisms with 5, 6, 7, and 9 steps based on the full GRI 2.11 mechanism, were developed and evaluated for their potential to model natural-gas chemistry (including NO_x chemistry) in gas turbine combustors. These new reduced mechanisms were optimized to model the high pressure and fuel-lean conditions found in gas turbines operating in the lean premixed mode.

Original Publication Citation

Mallampalli, H., T. H. Fletcher, and J. Y. Chen, "Evaluation of CH4/NOx Reduced Mechanisms Used for Modeling Lean Premixed Turbulent Combustion of Natural Gas," Journal of Engineering for Gas Turbines and Power, 120, 703-712 (1998).

BYU ScholarsArchive Citation

Mallampalli, Hemant P.; Fletcher, Thomas H.; and Chen, J Y., "Evaluation of CH4/NOx Reduced Mechanisms Used for Modeling Lean Premixed Turbulent Combustion of Natural Gas" (1998). Faculty Publications. 7055.
https://scholarsarchive.byu.edu/facpub/7055

Document Type

Peer-Reviewed Article

Publication Date

1998

Publisher

ASME

Language

English

College

Ira A. Fulton College of Engineering

Department

Chemical Engineering

University Standing at Time of Publication

Full Professor

Copyright Status

ASME

Copyright Use Information

https://lib.byu.edu/about/copyright/