标题：SIMULATION RESEARCH ON LOCAL RESISTANCE CHARACTERISTICS OF STATION VENTILATION BASED ON PARALLEL CONNECTION OF TWO FANS USING FOR WASTE GAS REMOVELING
摘要：In the process of mine development,it is easy to produce a lot of waste gas,which seriously pollutes the environment and threatens personal safety.The efficiency of fan station is directly related to the effect of blowdown.The parallel connection of double fans is a common structure form of ventilation in fan station,and the additional resistance loss caused by the mutual influence of airflow in and out of the ventilation station directly affects its operating cost.This paper focuses on the influence of different fan spacing,diffuser structure parameters,and tunnel wall friction on station local resistance.An experimental model was established based on the actual situation of a certain mining project.Fluent numerical simulation and similar experiments were combined used to analyze the effect of the fan spacing,diffuser structure parameters,and tunnel wall friction on the station resistance and the size of the impact.Meanwhile,the quantitative function expression of the influence from the above-related factors on the station resistance is also presented using regression analysis.The results illustrate that the local resistance decreases first and then increases with the growth of fan spacing,rising gradually with the increasing of diffuser length,deducting linearly with the increase of friction coefficient; the influence degree of each factor is: diffuser length>friction coefficient>fan spacing; the calculated value of function expression is consistent with the experimental results,which provides theoretical guidance and data support for the structural design of similar ventilation stations.
关键词：Waste gas pollution;paralleled double fan;airflow interaction;local resistance;similarity experiment;numerical simulation;regression analysis
