循环型矿用空气幕出口风速对隔断风流效果影响的数值模拟  

Numerical Simulation on Influence of Cyclic Mine Air Curtain Outlet Velocity on Effectiveness of Obstructing Airflow

作　　者：赵玲[1,2] 蒋仲安[1] 

机构地区：[1]北京科技大学土木与环境工程学院,北京100083 [2]江西理工大学资源与环境工程学院,江西赣州341000

出　　处：《矿业安全与环保》2011年第4期18-20,41,共4页Mining Safety & Environmental Protection

摘　　要：根据空气幕隔断巷道风流的具体特点,建立了风流流场的数学模型。采用计算流体力学的FLUENT软件,对不同风速下的压力场及速度场进行数值模拟,其结果与理论数据相吻合。模拟结果显示,根据静压及速度梯度可将风流流场分为稳定的上、下游区及变化剧烈的回流区,为数据测量提供依据。空气幕出口风速降低,有效压力随之降低,会使漏风量进一步增加,在设计空气幕时,其隔断能力与所需隔断压差要匹配。A mathematical model of airflow field was established according to the characteristics of the air curtain obstructing airflow in mine roadway.The numerical simulation was conducted on the pressure field and velocity field at different air velocity with CFD software FLUENT,and its result was consistent with the theoretical data.The simulation results indicated that the airflow field might be divided into the stable upstream zone and downstream zone and the varying air-return zone according to the gradient of the static pressure and velocity so as to provide the basis for date measurement.The effective pressure decreased with the decrease of the air velocity at the air curtain outlet,which may cause the air leakage to be further increased,so when designing the air curtain,the obstructing capacity must match the obstructing pressure difference.

关 键 词：矿用空气幕 出口风速 隔断风流 流场 数值模拟 

分 类 号：TD72[矿业工程—矿井通风与安全]