Numerical simulation of flame induced aerodynamics in a coal-mine passageway, semi-empirical model

A theoretical study is presented of the aerodynamic response of a single-mine entry to flame-induced disturbance. The unsteady, one-dimensional, compressible-flow equations were solved using the method of characteristics. This study was undertaken to determine the feasibility of extending the method-of-characteristic to study the aerodynamic response of complex mine networks. It was demonstrated that although the technique has merit in studying the complex wave interaction in single entries, it appears to be too unwieldly and too expensive for network analysis. Effort was also directed at a further study of the dispersion and filtering characteristic of aerodynamic disturbances in mine passageways.