Numerical simulation of ventilation of blind drifts with a force-exhaust overlap system in the condition of methan and dust hazards

作者：Branny Marian^*; Filipek Wiktor

来源：Archives of Mining Sciences, 2008, 53(2): 221-234.

• unerground ventilation
• CFD simulation
• blind drifts ventilation

This paper outlines a theoretical method of finding 3D velocity fields and methane and dust concentrations in the air in blind drifts with a force-exhaust overlap ventilation system incorporating a forcing duct with a vortex duct and an auxiliary exhaust duct with the dust separator. The solution is supported by equations and simulation programs utilizing the CFD approach. The air and methane mixture is assumed to be an ideal and compressible gas, its motion is taken to be steady and the whole process is assumed to be isothermal. Fresh air is assumed to be a three-component mixture of nitrogen, oxygen and water vapour. The problem considered in this study is described with continuity equations, Navier- Stokes equations, k-epsilon model equations as well as transport equations of chemical species (components of air-methan mixture).

• 出版日期2008