Effect of longwall face advance rate on spontaneous heating process in the gob area - CFD modelling

0368933 - ÚGN 2012 RIV GB eng J - Článek v odborném periodiku
Taraba, B. - Michalec, Zdeněk
Effect of longwall face advance rate on spontaneous heating process in the gob area - CFD modelling.
Fuel. Roč. 90, č. 8 (2011), s. 2790-2797. ISSN 0016-2361. E-ISSN 1873-7153
Grant CEP: GA ČR GA105/06/0630
Grant ostatní: GA ČR(CZ) GA105/08/1414
Výzkumný záměr: CEZ:AV0Z30860518
Klíčová slova: coal oxidation * spontaneous heating * CFD modelling * Fluent
Kód oboru RIV: DH - Báňský průmysl vč. těžby a zpracování uhlí
Impakt faktor: 3.248, rok: 2011
http://www.sciencedirect.com/science/article/pii/S0016236111001724

A commercial CFD software programme, FLUENT, was used to study the oxidation process of coal in the mined-out longwall (gob) area. A three-dimensional, single-phase model with a continuously advancing longwall face has been developed. For the model, the gob longwall area was designed on the basis of the actual longwall panel operating in the Ostrava-Karviná Coal Mines (OKD, Czech Republic). The behaviour of the coal to oxygen was modelled using the results arising mainly from the former laboratory-scale experiments with Czech bituminous coals. Basically, the technique of pulse flow calorimetry and measurements at a continuous airflow reactor were applied during the laboratory investigations. In the contribution, the main focus was to understand the effect of the longwall face advancing speed on the oxidation heat production as well as evolution of the gases in the gob area. Simultaneously, the effect of coal crushing in the mined-out area on the spontaneous heating process was examined.
Trvalý link: http://hdl.handle.net/11104/0203134