Simulation Study on Distribution Law of Methane Explosion Characteristic Parameters in 20 L Explosion Vessel
MA Zhongbin
Abstract：Numerical simulation study was conducted on the distribution laws of each characteristic parameter of methane explosion in a 20 L explosion vessel under normal temperature and atmospheric pressure by using FLUENT fluid simulation software, and the development and change laws of the explosion parameters such as the explosion pressure, flame temperature, burning rate and density as well as the flow field state were obtained. The study indicated that the pressure distribution at each point in the explosion vessel was basically the same, the duration of the explosion reaction was about 130 ms, the flame temperature was about 2 500 K;the farther the distance from the ignition point, the larger the change range of the density; the flame speed reached a maximum value of 2. 87 m/s at the place about 0. 04 m away from the ignition point, and the secondary acceleration appeared at the place about 0. 14 m away from the ignition point. The results provided an important theoretical basis for recognizing the methane explosion mechanism and effectively preventing gas explosion.
Keywords：methane explosionexplosion pressureflame temperatureburning ratedensityflow field
Publication Date：2014-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 11-14 )