Numerical Simulation of Gob Spontaneous Combustion "Three Zones" in Different Permeability

Through the establishment of corresponding physical-mathematical model of gob flow field, numerical simulations of oxygen concentration are conducted by using Fluent software under different distributions of gob permeability, such as continuous distribution, segmented uniform distribution and uniform distribution. It shows that great differences on position and width of gob spontaneous combustion "three zones" existing in different permeability.