Numerical simulation on propagation and attenuation of shock waves in simplex turn roadway during gas explosion

On the basis of some hypothesis,the physical and mathematical model of shock waves propagation were set up in turn roadway.The results of numerical simulation show that the pressure,velocity and temperature of shock wave will be attenuated during propagation.At the beginning of gas explosion,the quantity of parameters of shock wave front is increased gradually because of methane reaction.However,the pressure,velocity and temperature will be attenuated to a small extent after the end of the chemical reaction.Through the contrast of experiment,simulation and practice,the highly identical data shows that the numerical model is practicable.