Modelling and computation of large-scale open atmosphere hydrogenair deflagration | ||
| Kafrelsheikh Journal of Information Sciences | ||
| Article 6, Volume 2, Issue 2, September and October 2021, Pages 1-9 PDF (4.16 M) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/kjis.2021.187822 | ||
| Author | ||
| Mohamed Sakr* | ||
| School of Built Environment, Ulster University, Jordanstown Campus, BT370QB, UK | ||
| Abstract | ||
| Studying of gas deflagration is important for a safety purpose in gas industry. A modelling approach based on large eddy simulation (LES) technique for modelling turbulent flow combined with the species mass fraction equations for modelling combustion is used. Different flame acceleration mechanisms, hydrodynamic & thermo-diffusive instabilities, turbulence, and their interaction in addition to flame quenching model are used to model chemical reaction rate. An algebraic model for flame-generated turbulence is incorporated. The model is tested against large scale open atmosphere hydrogen-air experiment. The flame propagation radius and the overpressures are qualitatively compared well with experiment and the state-of-the-art simulations. | ||
| Keywords | ||
| computational fluid dynamics; turbulence closure; combustion closure | ||
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