Analysis of coupled heat transfer for fractured rock seepage
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摘要: 以地下裂隙岩体在裂隙水—孔隙水和温度场之间耦合作用为研究对象,对热和流体流动控制方程采用有限容积数值方法进行离散求解,设置了六种裂隙水—孔隙水流速方案,给出了部分无量纲温度场,并分析了传热与流动原因。分析结果表明:岩体内裂隙水—孔隙水引发的热质迁移对裂隙岩体的温度场分布有重要影响;当裂隙岩体内发生地下裂隙水—孔隙水渗流、及热量的转移时,会产生渗流场、温度场之间的耦合作用;裂隙内水流渗透速度是影响岩体温度的主要因素,孔隙内水流渗透速度是影响岩体温度的次要因素,温差主要发生在裂隙水边界层处。Abstract: This paper takes the coupling effect which between fissure water-pore water and temperature field as the research object,use finite volume numerical method to dispersed solving for heat and fluid flow control equations,Set up six kinds of flow rate plans for fissure water-pore water,gives part of the dimensionless temperature field,and analyzes the reason of the heat transfer and flow.The analysis result shows that: the heat and mass transfer which caused by fissure water-pore water in rock is plays an important affect for temperature field distribution of fractured rock;When happening underground fissure water-pore water seepage and-the heat transfer in the fractured rock,it will produce coupling effect between the seepage and temperature field;the water penetration speed in fissure is the main factor which effects the temperature of rock,and the pore water penetration speed is the secondary factor,temperature difference mainly happening in the boundary layer place of fracture water.
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Key words:
- fractured rock /
- seepage field /
- temperature field /
- coupled analysis
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