A fracture aperture dependent thermal-cohesive coupled model for modelling thermal conduction in fractured rock mass
作者: Zhijun WuYuan ZhouLifeng Fan
作者单位: 1School of Civil Engineering, Wuhan University, Wuhan 430072, China
2College of Architecture and Civil Engineering, Beijing University of Technology, Beijing 100124, China
刊名: Computers and Geotechnics, 2019, Vol.114
来源数据库: Elsevier Journal
DOI: 10.1016/j.compgeo.2019.103108
关键词: Thermal effectsFractured rock massTransient thermal conductionCoupled FEM-DEM methodThermal-cohesive coupled model
英文摘要: Abstract(#br)Due to thermal resistance characteristics of fractures, to realistically assess thermal effects of fractured rock mass, it should correctly reflect the thermal interaction between fracture interfaces. In this study, the coupled FEM-DEM method is extended to model transient thermal conduction in fractured rock mass. Rock matrix and fractures are discretized into solid elements and cohesive elements, respectively. To simulate thermal conduction across fractures, the cohesive element is coupled with a thermal model (thermal-cohesive model) by incorporating an aperture dependent interfacial thermal conductivity. Validation simulations indicate that the proposed model is capable of capturing the temperature jumps across the fractures with different apertures. Then, the influences...
全文获取路径: Elsevier  (合作)
影响因子:1.224 (2012)

  • thermal 热的
  • coupled 耦合
  • conduction 导电
  • aperture 
  • cohesive 粘着的
  • model 模型
  • dependent 从属的
  • fractured 断裂的
  • method 方法
  • effects 海员自身物品