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Mining Publication: CFD Modeling of Spontaneous Heating in a Large-Scale Coal Chamber
Keywords: Coal mining Numerical modeling Spontaneous combustion Underground mining
Original creation date: July 2009
Authors: L Yuan, AC Smith
Peer Reviewed Journal Article - July 2009
Download PDF Document (0.50 MB)
NIOSHTIC2 Number: 20035458
J Loss Prev Process Ind 2009 Jul; 22(4):426-433
Three-dimensional computational fluid dynamics (CFD) modeling is conducted to simulate spontaneous heating in a large-scale coal chamber with a forced ventilation system. Spontaneous heating is modeled as the low-temperature oxidation of coal using kinetic data obtained from previous laboratory-scale spontaneous heating studies. Heat generated from coal oxidation is dissipated by convection and conduction, while oxygen and oxidation products are transported by convection and diffusion. The water vapor transfer and the effect of heat of wetting are not modeled. The CFD model is validated by comparing simulation results with test results from U.S. Bureau of Mines experiments conducted in the coal chamber. The model predicts lower temperatures in the early stage but agrees well on the induction time for spontaneous heating. The effects of airflow rate and order of reaction on the spontaneous heating process are also examined. The calibrated CFD model is found to be useful for predicting the induction time for spontaneous heating in underground coal mines.
Image of publication CFD Modeling of Spontaneous Heating in a Large-Scale Coal ChamberPeer Reviewed Journal Article - July 2009
Download PDF Document (0.50 MB)
NIOSHTIC2 Number: 20035458
J Loss Prev Process Ind 2009 Jul; 22(4):426-433
See Also
Computational Fluid Dynamics Modeling of Spontaneous Heating in Longwall Gob Areas
Effect of Longwall Face Advance on Spontaneous Heating in Longwall Gob Areas
The Effect of Ventilation on Spontaneous Heating of Coal
Effects of Ventilation and Gob Characteristics on Spontaneous Heating in Longwall Gob Areas
Numerical Study on Effects of Coal Properties on Spontaneous Heating in Longwall Gob Areas
Simulation of Spontaneous Heating in Longwall Gob Area with a Bleederless Ventilation System
SPONCOM - A Computer Program for the Prediction of the Spontaneous Combustion Potential of an Underground Coal Mine
Spontaneous Combustion
Technology News 441 - SPONCOM - An Expert System to Predict Spontaneous Combustion Potential of a Coal Mining Operation
Technology News 545 - NIOSH Updates Spontaneous Combustion Assessment Software
Page last reviewed: September 21, 2012
Page last updated: September 21, 2012
Content source: National Institute for Occupational Safety and Health, Mining Program
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