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Chemical Physics and Mesoscopics, 2016, Volume 18, Issue 4, Pages 501–508
(Mi chphm302)
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This article is cited in 1 scientific paper (total in 1 paper)
On the prediction of the flame spread rate over polymer fuel surface. Effect of the gas-phase reaction kinetics
A. I. Karpov, A. A. Shaklein, A. A. Bolkisev, M. A. Korepanov Institute of Mechanic, Ural Branch of the Russian Academy of Sciences, Izhevsk, Russia
Abstract:
A numerical study of the two-dimensional flame spread over horizontal surface of PMMA has been performed by coupled statement describing the feedback interaction of heat and mass transfer between the gas-phase and solid fuel. The primary assumptions engaged into consideration are laminar flow and negligible radiation which both are derived from the small-scale flame occurred. The steady-state regime has been accomplished resulting in the steady flame spread rate is stated as a principal parameter which evaluates the process behavior. The one-step macroscopic reactions are employed both for gas-phase combustion and solid fuel pyrolysis. The main purpose of present study relates to the investigation of the effect of kinetic parameters (namely, pre-exponential factor and activation energy) on the flame spread rate. The basic values of combustion kinetics correspond to the low-molecular gases such the carbon monoxide or methane. Pre-exponential factor and activation energy have been varied till the limits of flame spread: flame extinguishing under lower pre-exponential factor and higher activation energy and overheating (appears as a numerical divergence) higher pre-exponential factor and lower activation energy. Through the parametric investigation a range of kinetic parameters for one-step macroscopic combustion reaction has been determined that providing proper agreement with experimental data for flame spread rate.
Keywords:
flame spread, macroscopic reaction, PMMA burning, numerical modeling.
Citation:
A. I. Karpov, A. A. Shaklein, A. A. Bolkisev, M. A. Korepanov, “On the prediction of the flame spread rate over polymer fuel surface. Effect of the gas-phase reaction kinetics”, CPM, 18:4 (2016), 501–508
Linking options:
https://www.mathnet.ru/eng/chphm302 https://www.mathnet.ru/eng/chphm/v18/i4/p501
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