Abstract:
According to the ventilation and heat transfer characteristics of heading face, based on the influence factors correlation for heat transfer coefficient of impinging jet in heading face.The ANSYS software is used to simulate 840 combinations for the specific roadway (the roadway for ventilation and fire prevention test of China Coal Technology and Engineering Group Chongqing Research Institute,
D has been determined),the combinations includes different Reynolds number
Re,air duct diameter
d,the distance
H between the air duct outlet and head-on,the surrounding rock under the constant temperature condition.The specific form is obtained that the influence factors correlations for heat transfer coefficient of impinging jet in heading face,the correlation coefficients
R2 is 0.937, which can provide the theoretical basis for calculating the heat dissipating capacity of the surrounding rock in mine cooling.