摘要
基于流体动力学和射流理论,建立了独头巷道压入式受限附壁射流通风的紊流k-ε数学模型,分析了计算边界条件,并结合实际应用Phoenics3 4计算流体动力学软件模拟了独头巷道射流通风三维流场,得出了独头巷道有限空间受限附壁射流通风典型截面的流场规律.模拟计算结果表明,独头巷道压入式通风流场可分为附壁射流区、冲击射流附壁区、回流区和涡流区.数值模拟与实验结果相符,为研究独头巷道风流传质过程、瓦斯运移规律及通风排污效率等提供了理论基础.
Based on hydrodynamic and jet theory, set up the turbulence k-ε model of restrained wall-attached jet ventilation in heading face and calculation boundary, and combined with practice, using Phoenics3.4 software of computational fluid dynamics(CFD) simulated three-dimensional flow field of the jet ventilation in heading face, and the flow field regularity of typical sections was obtained by numerical simulation. According to results of numerical simulation, there are four zones in heading face which are wall-attached jet zone and impact jet wall-attached zone and back flow zone and eddy zone, and the result of numerical simulation and experiment was agreement, so as to provide a dependable basis for further study the air mass transport process and the reason of methane accumulation and the efficiency of air displacement in heading face.
出处
《煤炭学报》
EI
CAS
CSCD
北大核心
2004年第4期425-428,共4页
Journal of China Coal Society
基金
国家自然科学基金资助项目(59974022)
湖南省教育厅科研项目(00C211)
关键词
独头巷道
附壁射流
κ-ε模型
流场
数值模拟
heading face
wall-attached jet
k-ε model
flow field
numerical simulation
