CFD-based Study Of The Mine Ventilation Network Solution

Coal mine ventilation system is the production of an important and indispensablecomponent of the production process to ensure the safety of coal mines in safe, reliable,economical and practical mine ventilation system play an indelible role. Mine ventilationnetwork solutions considered to be the mine ventilation system security management in a verycritical task in the design of the new mine ventilation network, select the master fan model,tapping the potential of transforming the old mine status, etc. have played an indispensable therole.Mine disaster in the analysis phase of the ventilation network, can be seen as a mineventilation network formed by the branch system of work, the application of traditional methodsof ventilation network analysis network solver romantic state, will be romantic as a steady flow,not simulate the dynamic process of change in the network. In fact, the catastrophe occurred inthe ventilation network will always be the case of unsteady flow, continue to apply thetraditional method of ventilation network solver solver results is inherently fuzzy.In this paper, the unsteady flow theory based on the analysis, combined with the disasterperiod the mine ventilation network romantic flow characteristics, to establish a more truereflection of the mine ventilation Lane net unsteady flow of one dimensional model, whichinclude: the continuity equation, motion equation, energy equation and the equation of state. Forone-dimensional unsteady flow model paper focuses on the mine ventilation network solutionmethod—Method of characteristics, obtained by pushing the hyperbolic characteristic equationand the temperature characteristic equations and boundary conditions, and through this method,to calculate a certain experimental mine ventilation network system when the romantic fire in theroadway by a certain pressure, speed and temperature variation, by analyzing the results a truereflection of the wind flow pattern of gas within the network, proved the feasibility of thismethod.