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Modelling of transient stretched laminar flame speed of hydrogen-air mixtures using combustion kinetics
conference contributionposted on 2015-11-03, 11:04 authored by Jiayi Gu, Rui Chen
The calculations of laminar burning velocity are mostly based on empirical correlations obtained from combustion bomb experiments. There is a noticeable scarcity of the fitting parameters in these correlations, especially under increased temperature and pressure conditions. The effects of flame stretch and instabilities further complicate the situation as these effects are not distinguished in some correlations. Furthermore, although combustion products are of great interests in recent computer simulations of combustion, it is difficult to integrate combustion chemistry into the existing correlations. This paper discusses a laminar burning velocity model for hydrogen-air mixtures in a constant volume combustion bomb. The model is based on a one-dimensional three-zone thermodynamic model that calculates the mass transfer and diffusion and the heat transfer between zones. The chemical process involved in the combustion is solved by an in-house chemical kinetics solver with an established reduced hydrogen-oxidation mechanism from literature. The effects of flame stretch and instabilities are simulated using existing experimental data. The calculated laminar burning velocities are compared to existing empirical correlations and experimental data obtained from constant volume combustion bomb tests. The model is able to simulate laminar burning velocities and have the potential to be integrated into IC engine models in the future.
- Aeronautical, Automotive, Chemical and Materials Engineering
- Aeronautical and Automotive Engineering
Published in12th International Conference on Combustion and Energy Utilisation (ICCEU) 12TH INTERNATIONAL CONFERENCE ON COMBUSTION & ENERGY UTILISATION
Pages137 - 140 (4)
CitationGU, J. and CHEN, R., 2015. Modelling of transient stretched laminar flame speed of hydrogen-air mixtures using combustion kinetics. Energy Procedia, 66, pp.137-140.
Publisher© 2014 The Authors / Published by Elsevier
- VoR (Version of Record)
Publisher statementThis work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/
NotesThis is an Open Access paper, published by Elsevier under the the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. This paper was originally presented at the 12th International Conference on Combustion & Energy Utilisation, Lancaster, UK, 29th September - 3rd October 2014.