Zpravodaj Hnědé uhlí 2013, 53(1)

Modelling of influence of coal stock-pile parameters on self-ignition process dynamics

Ing. Zdeněk Michalec1, Ing. Vladimíra Michalcová, Ph.D.2, prof. Ing. Boleslav Taraba, CSc.3
1 Ústav geoniky AV ČR, Ostrava-Poruba
2 Technická univerzita Ostrava, Fakulta stavební
3 Ostravská univerzita, Přírodovědecká fakulta

A commercial CFD software programme, ANSYS-Fluent, was used to study the low temperature oxidation of coal inside stockpiled coal. Two dimensional, single-phase model of coal oxidised inside the stockpile has been developed respecting the atmospheric boundary layer. Main attention is focused on the influence of geometry and/or porosity of the stockpile on dynamics of the coal spontaneous heating process. Numerical simulations proved stockpile porosity to be a dominant parameter influencing oxidation process of stockpiled coal. As to geometry, slope of the stockpile side is mainly important with evident rise in oxidation process as the slope angle increases.

Keywords: CFD modelling, spontaneous combustion of coal, coal stockpile, atmospheric boundary layer

Published: March 1, 2013  Show citation

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Michalec, Z., Michalcová, V., & Taraba, B. (2013). Modelling of influence of coal stock-pile parameters on self-ignition process dynamics. Brown Coal Bulletin, 53(1), 
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