Shear heating in granular materials: micromechanics of thermal conduction and production

石油、天然气和地热勘探是澳大利亚的主要能源行业，必须优化以实现高效生产。这些过程主要是通过颗粒状土壤介质的热量传递。过去的研究是基于连续热流解决方案，但这些问题是由不同的颗粒-颗粒接触网络和颗粒间孔隙流体控制的。热流解依赖于热传导、生产和对流的有效项，但这些随载荷而变化。因此，必须完成一项系统的研究，以制定有效热性质的微观力学，从而改进连续介质解决方案，以优化能源勘探。

Oil, gas and geothermal exploration are amongst the major energy industries in Australia and must be optimised to enable efficient production. These processes are dominated by the transfer of heat through granular soil media. Past research was based on continuum heat-flow solutions, but these problems are governed by distinct networks of particle-particle contacts and interparticle pore-fluids. Heat-flow solutions depend on effective terms of thermal conduction, production and convection, but these change with loading. A systematic study must therefore be accomplished to formulate the micromechanics of the effective thermal properties, such that continuum solutions are refined to optimise energy exploration.