Analysis of Hydrogen/Air Turbulent Premixed Flames at Different Karlovitz Numbers Using Computational Singular Perturbation

Manias, Dimitrios M.; Tingas, Efstathios-Al; Hern�ndez P�rez, Francisco E.; Im, Hong G.; Galassi, Riccardo Malpica; Ciottoli, Pietro Paolo; Valorani, Mauro

Abstract

The 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.

Citation

Manias, D. M., Tingas, E.-A., Hernández Pérez, F. E., Im, H. G., Galassi, R. M., Ciottoli, P. P., & Valorani, M. (2018, January). Analysis of Hydrogen/Air Turbulent Premixed Flames at Different Karlovitz Numbers Using Computational Singular Perturbation. Presented at 2018 AIAA Aerospace Sciences Meeting, Kissimmee, Florida

• Presentation Conference Type: Conference Paper (published)
• Conference Name: 2018 AIAA Aerospace Sciences Meeting
• Start Date: Jan 8, 2018
• End Date: Jan 12, 2018
• Acceptance Date: Sep 10, 2017
• Online Publication Date: Jan 7, 2018
• Publication Date: Jan 8, 2018
• Deposit Date: Jun 26, 2020
• Publisher: American Institute of Aeronautics and Astronautics
• Book Title: AIAA SciTech Forum
• ISBN: 9781624105241
• DOI: https://doi.org/10.2514/6.2018-0364
• Public URL: http://researchrepository.napier.ac.uk/Output/2672594