风窗局部阻力系数的实验测定及数值模拟分析  

Experimental determination and numerical simulation analysis on the local resistance coefficient of the ventilation regulator

作　　者：邵和[1] 陈开岩[1] 赵红梅[1] 

机构地区：[1]中国矿业大学安全工程学院,江苏徐州221008

出　　处：《中国科技论文》2015年第21期2467-2471,共5页China Sciencepaper

基　　金：国家自然科学基金资助项目(51134023)

摘　　要：为了准确计算调节风窗产生的局部阻力大小,先采用局部阻力测定实验系统,测定分析紊流状态下,不同雷诺数对局部阻力系数的影响,然后采用CFD数值模拟法,分析层流及紊流状态下,不同雷诺数对局部阻力系数的影响。结果表明,在层流状态下,局部阻力系数受雷诺数影响较大,而紊流状态下,雷诺数对局部阻力系数的影响较小。To accurately calculate the local resistance of ventilation regulator, the effects of different Reynolds number on the local resistance coefficient under turbulent state were firstly measured in physical experiments and then the effects under both turbulent and laminar flow states were analyzed by using CFD numerical simulation. The results show that the Reynolds number has great influence on the local resistance coefficient under the laminar flow state while has little influence under the turbulent state.

关 键 词：矿井通风 风量 调节风窗 局部阻力系数 阻力测定 紊流状态 雷诺数 

分 类 号：TD722[矿业工程—矿井通风与安全]