非均质采空区气-固耦合温度场迎风有限元求解  

Gas-solid Coupling Temperature Field in Heterogeneous Goaf Solved by Upwind Finite Element

作　　者：李宗翔[1] 韦涌清[1] 孙世军 

机构地区：[1]辽宁工程技术大学,辽宁阜新123000 [2]长春煤炭集团公司羊草沟煤矿,吉林长春130505

出　　处：《昆明理工大学学报（理工版）》2004年第2期5-9,共5页Journal of Kunming University of Science and Technology(Natural Science Edition)

基　　金：辽宁工程技术大学校基金资助项目 (项目编号 :0 2 0 2 37)

摘　　要：重点讨论了用迎风有限元方法结合图形显示技术计算回采采空区温度场温度分布问题 .先建立采空区煤耗氧和自燃升温的定解数学模型 ,联立求解了漏风渗流方程、氧浓度消耗———弥散方程和传热方程 .详细描述了在漏风流作用下采空区遗煤氧化自燃过程 ,给出了采空区温度分布的稳定的动态数值解 .通过计算对比 ,该方法有效地控制了数值解的振荡 ,避免了人工干预对计算结果影响 。The upwind limited element method and the graphics display technique are used as numerical data to solve the seepage flow motion equation of air leakage, oxygen concentration dissipation equation and heat transfer equation simultaneously,and the variation process of the oxygen concentration and temperature rise during spontaneous combustion oxidation process of coal in goaf is also described. The contrast calculations show that the method can effectively control the oscillation of the numerical solution, the convergence stationary numerical solution is more convenient for visual treatment, and therefore, the effect of the manual interference on the calculation results can be eliminated.

关 键 词：非均质采空区 气-固耦合温度场 迎风有限元 多孔介质 采空区风流 氧浓度分布 自燃 

分 类 号：TD752.2[矿业工程—矿井通风与安全]