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.F02.4
Abstract: F02.00004 : Low-Mach-Number Simulations of Diffusion Flames with the Chemical-Diffusive Model*
8:39 AM–8:52 AM
Presenter:
Joseph Chung
(Univ of Maryland-College Park)
Authors:
Joseph Chung
(Univ of Maryland-College Park)
Xiao Zhang
(Univ of Maryland-College Park)
Carolyn Kaplan
(Univ of Maryland-College Park)
Elaine S Oran
(Univ of Maryland-College Park)
We describe the calibration and implementation of the chemical-diffusive model (CDM) for the simulation of diffusion flames. The CDM uses the relatively simple functional form of an Arrhenius rate along with diffusion parameters, energy, and a progress variable to control the conversion of reactants to products and the rate of chemical energy release. The constants for the model are determined by an optimization procedure. Input into this procedure is obtained from detailed chemical models or experimental data. Prior CDM applications computed properties of flames and detonations for single equivalence-ratio (ER) mixtures or mixtures with variable ER, but generally for premixed combustion. Now we have taken the variable-ER form of the CDM, incorporated it into a low-Mach-number solution of the Navier-Stokes equations (based on the BIC-FCT algorithm), and calibrated it for simulations of a diffusion flame. Computations of test problems, such as laminar and co-flow diffusion flames are demonstrated, culminating in a three-dimensional simulation of a fire whirl.
*This work was supported by the Army Research Office (grant W911NF1710524), the University of Maryland through Minta Martin Endowment Funds, and through the Glenn L. Martin Institute Chaired Professorship.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2018.DFD.F02.4
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