Comprehensive Validation of Skeletal Mechanism for Turbulent Premixed Methane–Air Flame Simulations

Handle URI:
http://hdl.handle.net/10754/625717
Title:
Comprehensive Validation of Skeletal Mechanism for Turbulent Premixed Methane–Air Flame Simulations
Authors:
Luca, Stefano; Al-Khateeb, Ashraf N.; Attili, Antonio; Bisetti, Fabrizio
Abstract:
A new skeletal mechanism, consisting of 16 species and 72 reactions, has been developed for lean methane–air premixed combustion from the GRI-Mech 3.0. The skeletal mechanism is validated for elevated unburnt temperatures (800 K) and pressures up to 4 atm, thereby addressing realistic gas turbine conditions. The skeletal mechanism is obtained by applying the directed relation graph method and performing sensitivity analysis on the detailed mechanism. The mechanism has been validated for flame speed and flame structure in a wide range of conditions and configurations. A good agreement between the skeletal mechanism and GRI-3.0 was obtained. The configurations considered include one-dimension laminar premixed flames, laminar non-premixed counterflow burners, and two- and three-dimensional unsteady configurations with variations of temperature, pressure, and composition. The skeletal mechanism allows for the inclusion of accurate finite rate chemistry in large-scale direct numerical simulations of lean turbulent premixed flames. In a large-scale direct numerical simulation, the use of the skeletal mechanism reduces the memory requirements by more than a factor of 3 and accelerates the simulation by a factor of 7 compared with the detailed mechanism. The skeletal mechanism is suitable for unsteady three-dimensional simulations of methane turbulent premixed, non-premixed, and globally lean partially premixed flames and is available as supplementary material.
KAUST Department:
King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia
Citation:
Luca S, Al-Khateeb AN, Attili A, Bisetti F (2017) Comprehensive Validation of Skeletal Mechanism for Turbulent Premixed Methane–Air Flame Simulations. Journal of Propulsion and Power: 1–8. Available: http://dx.doi.org/10.2514/1.b36528.
Publisher:
American Institute of Aeronautics and Astronautics (AIAA)
Journal:
Journal of Propulsion and Power
Issue Date:
1-Aug-2017
DOI:
10.2514/1.b36528
Type:
Article
ISSN:
0748-4658; 1533-3876
Sponsors:
The research reported in this publication was supported by funding from King Abdullah University of Science and Technology. We acknowledge valuable support from the Supercomputing Laboratory in the form of computational time on the CRAY XC40 Shaheen supercomputer available at King Abdullah University of Science and Technology.
Additional Links:
https://arc.aiaa.org/doi/10.2514/1.B36528
Appears in Collections:
Articles

Full metadata record

DC FieldValue Language
dc.contributor.authorLuca, Stefanoen
dc.contributor.authorAl-Khateeb, Ashraf N.en
dc.contributor.authorAttili, Antonioen
dc.contributor.authorBisetti, Fabrizioen
dc.date.accessioned2017-10-03T12:49:35Z-
dc.date.available2017-10-03T12:49:35Z-
dc.date.issued2017-08-01en
dc.identifier.citationLuca S, Al-Khateeb AN, Attili A, Bisetti F (2017) Comprehensive Validation of Skeletal Mechanism for Turbulent Premixed Methane–Air Flame Simulations. Journal of Propulsion and Power: 1–8. Available: http://dx.doi.org/10.2514/1.b36528.en
dc.identifier.issn0748-4658en
dc.identifier.issn1533-3876en
dc.identifier.doi10.2514/1.b36528en
dc.identifier.urihttp://hdl.handle.net/10754/625717-
dc.description.abstractA new skeletal mechanism, consisting of 16 species and 72 reactions, has been developed for lean methane–air premixed combustion from the GRI-Mech 3.0. The skeletal mechanism is validated for elevated unburnt temperatures (800 K) and pressures up to 4 atm, thereby addressing realistic gas turbine conditions. The skeletal mechanism is obtained by applying the directed relation graph method and performing sensitivity analysis on the detailed mechanism. The mechanism has been validated for flame speed and flame structure in a wide range of conditions and configurations. A good agreement between the skeletal mechanism and GRI-3.0 was obtained. The configurations considered include one-dimension laminar premixed flames, laminar non-premixed counterflow burners, and two- and three-dimensional unsteady configurations with variations of temperature, pressure, and composition. The skeletal mechanism allows for the inclusion of accurate finite rate chemistry in large-scale direct numerical simulations of lean turbulent premixed flames. In a large-scale direct numerical simulation, the use of the skeletal mechanism reduces the memory requirements by more than a factor of 3 and accelerates the simulation by a factor of 7 compared with the detailed mechanism. The skeletal mechanism is suitable for unsteady three-dimensional simulations of methane turbulent premixed, non-premixed, and globally lean partially premixed flames and is available as supplementary material.en
dc.description.sponsorshipThe research reported in this publication was supported by funding from King Abdullah University of Science and Technology. We acknowledge valuable support from the Supercomputing Laboratory in the form of computational time on the CRAY XC40 Shaheen supercomputer available at King Abdullah University of Science and Technology.en
dc.publisherAmerican Institute of Aeronautics and Astronautics (AIAA)en
dc.relation.urlhttps://arc.aiaa.org/doi/10.2514/1.B36528en
dc.titleComprehensive Validation of Skeletal Mechanism for Turbulent Premixed Methane–Air Flame Simulationsen
dc.typeArticleen
dc.contributor.departmentKing Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabiaen
dc.identifier.journalJournal of Propulsion and Poweren
dc.contributor.institutionKhalifa University, Abu Dhabi 127788, United Arab Emiratesen
dc.contributor.institutionRWTH Aachen University, 52056 Aachen, Germanyen
dc.contributor.institutionUniversity of Texas at Austin, Austin, Texas 78712en
kaust.authorLuca, Stefanoen
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