Modeling of the combustion process of methane hydrate taking into account the kinetics of the decomposition process

• Published in: Journal of Physics: Conference Series
• Main Authors: Chiglintseva, A S, Gimaltdinov, I K, Bayanov, I M, Stolpovsky, M V
• Format: Article in Journal/Newspaper
• Language: unknown
• Published: IOP Publishing 2021
• Subjects: Methane hydrate
• Online Access: http://dx.doi.org/10.1088/1742-6596/2094/2/022053; https://iopscience.iop.org/article/10.1088/1742-6596/2094/2/022053; https://iopscience.iop.org/article/10.1088/1742-6596/2094/2/022053/pdf

Abstract This paper presents a mathematical model of the combustion process of methane gas hydrate in a closed volume, taking into account the kinetics of its decomposition. The system of basic equations, which includes the equations of conservation of mass (for the entire mixture of gases and each component separately), momentum and energy, is supplemented by the conditions for the balance of mass and heat at the boundary of the phase transition. In this case, the dominant factor determining the intensity of hydrate decomposition is the Arrhenius-type kinetics and conductive heat transfer. Based on the numerical solution of the obtained system of equations based on the method of large particles, the temperature and concentration fields of the system are obtained and analyzed. It is shown that at the initial moment of time, the rate of decomposition of the hydrate according to the model that takes into account the kinetics of the decomposition process is higher than that according to the model that does not take it into account.