Simulation Investigation of the Temperature Field of High Temperature Heading Face Under Two-pipe Mix Ventilation System

摘要

A multicomponent single-phase model was set for hightemperature heading face in this study,based on the mass conservation law,the momentum conservation law and the energy conservation law.The standard wall function was used to correlate the physical quantities near the wall and in the turbulence kern zone.Parellel calculation method was used to simulate the distribution of the temperature field and the flow field.The calculation results show that,the temperature of the airflow goes up nonlinearly along the channel from the heading and the distribution of the temperature field depends on the characteristic of the flow field.Then the temperature curves of heading face with air injection.whose temperatures are diflerent,were analyzed.The section which is 7m far from the heading is the inflection point for all of the curves.The temperature gradient along the vertical direction increases quickly,but the largest temperature difference is less than 3K.So the comfort of human is satisfied under each temperature of the injection air.