CFD simulation of goaf gas flow patterns

Abstract

Goaf gas flow and distribution patterns were studied by means of CFD numerical simulauion.Discussed the theoretical basis of computational fluid dynamics(CFD) simulation,and introduced the CFD model development method based on FLUENT program.Goaf gas flow patterns,as well as gas flow rules by boreholes drainage,were simulated applying the developed CFD model at Panel 11418 of Zhangbei coal mine.The simulating results show that the maximum gas concentration can be 80% at the side of return airways.It suggests that studying goaf gas flow patterns applying CFD model is one of the feasible methods.