Analysis of Hydrogen/Air Turbulent Premixed Flames at Different Karlovitz Numbers Using Computational Singular Perturbation
Hernandez Perez, Francisco E.
Im, Hong G.
Galassi, Riccardo Malpica
Ciottoli, Pietro Paolo
KAUST DepartmentPhysical Sciences and Engineering (PSE) Division
Mechanical Engineering Program
Clean Combustion Research Center
King Abdullah University of Science and Technology (KAUST), Thuwal-Jeddah, Saudi Arabia.
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AbstractThe dynamics and structure of two turbulent H2/air premixed flames, representative of the corrugated flamelet (Case 1) and thin reaction zone (Case 2) regimes, are analyzed and compared, using the computational singular perturbation (CSP) tools, by incorporating the tangential stretch rate (TSR) approach. First, the analysis is applied to a laminar premixed H2/air flame for reference. Then, a two-dimensional (2D) slice of Case 1 is studied at three time steps, followed by the comparison between two representative 2D slices of Case 1 and Case 2, respectively. Last, statistical analysis is performed on the full three-dimensional domain for the two cases. The dominant reaction and transport processes are identified for each case and the overall role of kinetics/transport is determined.
CitationManias D, Tingas A-E, Hernandez Perez FE, Im HG, Galassi RM, et al. (2018) Analysis of Hydrogen/Air Turbulent Premixed Flames at Different Karlovitz Numbers Using Computational Singular Perturbation. 2018 AIAA Aerospace Sciences Meeting. Available: http://dx.doi.org/10.2514/6.2018-0364.
SponsorsThis work was sponsored by competitive research funding from King Abdullah University of Science and Technology (KAUST). MV also acknowledges the support of the Italian Ministry of University and Research (MIUR).