MODELING OF METHANE-AIR MIXTURENONSTATIONARY COMBUSTION PROCESS IN COAL MINES
Modeling of methane-air mixture nonstationary combustion process in coal mines is performed. Analytical dependencies are formulated to perform modeling of methane-air mixture nonstationary combustion on the basis of FlowVision software complex. The adequacy of the computer model on the experimental...
Main Authors: | , , , |
---|---|
Format: | Article |
Language: | English |
Published: |
"VostECO" Ltd
2018-03-01
|
Series: | Vestnik Naučnogo Centra po Bezopasnosti Rabot v Ugolʹnoj Promyšlennosti |
Subjects: | |
Online Access: | https://ind-saf.com/uploads/s/l/d/a/ldab4xgicwcd/file/uq2VNTg6.pdf |
Summary: | Modeling of methane-air mixture nonstationary combustion process in coal mines is performed. Analytical dependencies are formulated to perform modeling of methane-air mixture nonstationary combustion on the basis of FlowVision software complex. The adequacy of the computer model on the experimental data, given in the literature for 7 experiments, as well as on its own experimental data was verified. The average relative error of the model is from 10 to 20 %. The developed model is scaled for pipes with large diameters from 2 to 4 m and can be used to calculate non-stationary combustion for coal mine conditions. Modeling of nonstationary combustion for coal mine conditions was carried out. As a result, for the considered configurations of the mines it is established that: the maximum velocity of the flame front during detonation reaches 1400 m/s; the maximum temperature in the calculated region during detonation is 2440 °C; the maximum overpressure at detonation is 4 MPa; the calculated values of the radiation flux density at detonation reach 2200 kW / m2. |
---|---|
ISSN: | 2072-6554 2072-6554 |