砂岩多孔介质渗流与对流传热的数值模拟研究
Numerical model of convention heat transfer in coarse sandstone
砂岩的导热特性是国内外岩土工程领域最前沿的热点课题之一，是开展矿山地热防治及利用、页岩气开采、CO2储存（CCS）、煤炭地下气化（UCG）和核废料处置等众多深部工程的基础。本文以深部工程中常见的砂岩为研究对象建立了颗粒状多孔材料的模型。利用数值模拟软件对模型进行了模拟，研究了不同渗流速度下，颗粒材料的传热特性，得到了模型渗透系数、有效导热率及体积传热系数，解释了不同孔隙度、颗粒尺寸对传热系数影响的机理。非等径球体颗粒构造的模型在分模拟多孔介质渗流、传热现象时可以很好的与实际情况相符，特别是在对渗透的模拟方面可以克服等径球均匀堆积模型的不足，此方法为预测砂岩这类多孔介质的渗流、传热性质提出了新的思路和手段，对于深部巷道热负荷分析具有重要理论意义。
It has a great significant to research on the convection heat transfer caused by permeability in rock as a kind of porous media for governance and utilization of geothermal in deep mining. In this paper, a porous media model was constructed by non-equal diameter spherical particles for the studying of coarse sandstone. The permeability, convection heat transfer coefficient, particles' heat transfer characteristics, effective thermal conductivity coefficient in various seeping velocities were numerically simulated or studied. The influence of porosity and particle size for the heat transfer coefficient were also analyzed.
郭平业、刘达
矿业工程理论与方法论热工量测、热工自动控制
颗粒状多孔材料 渗透 传热 数值模拟
granular geology material permeability geothermal numerical simulatio
郭平业,刘达.砂岩多孔介质渗流与对流传热的数值模拟研究[EB/OL].(2016-05-26)[2025-08-02].http://www.paper.edu.cn/releasepaper/content/201605-1227.点此复制
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