Bulletin of the American Physical Society
71st Annual Meeting of the APS Division of Fluid Dynamics
Volume 63, Number 13
Sunday–Tuesday, November 18–20, 2018; Atlanta, Georgia
Session F02: Turbulent Combustion II: Combustion Modeling
8:00 AM–9:57 AM,
Monday, November 19, 2018
Georgia World Congress Center
Room: B203
Chair: Xinyu Zhao, University of Conneticut
Abstract ID: BAPS.2018.DFD.F02.3
Abstract: F02.00003 : Effect of Alternative Kinetic Mechanisms on Turbulent Combustion in a Shear Coaxial Injector*
8:26 AM–8:39 AM
Presenter:
Salvador Badillo-Rios
(University of California, Los Angeles)
Authors:
Salvador Badillo-Rios
(University of California, Los Angeles)
Ann Karagozian
(University of California, Los Angeles)
The use of full detailed kinetics in turbulent combustion simulations is impractical given the associated large computational cost. Studies have shown that turbulent flames may involve key reaction pathways that are significantly different from those in laminar flames, thus affecting the ability of reduced kinetic models to reasonably capture turbulence-chemistry interactions and related flow field behavior. The present study examines the effects of alternative kinetic models on turbulent combustion processes as a means of determining the conditions (if any) under which certain reaction pathways are altered and to aid in the development of more accurate reduced kinetic models. Utilizing the General Equation and Mesh Solver (GEMS) code, 2D axisymmetric parametric studies and simulations for a single element shear coaxial rocket injector are performed. GRI-Mech 3.0 and several reduced kinetic models are used to study the combustion of gaseous methane and oxygen, with a focus on global effects of the kinetics on flow and reaction dynamics. Results show differences in peak temperatures and flame anchoring among the models, in addition to differing grid and time resolution requirements.
*Supported by ERC subcontract PS150006 and by AFOSR (PMs: Drs. Chiping Li and Michael Kendra)
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2018.DFD.F02.3
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