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首页> 外文期刊>Surveys in Geophysics: An International Review Journal of Geophysics and Planetary Sciences >Coupled Process Models of Fluid Flow and Heat Transfer in Hydrothermal Systems in Three Dimensions
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Coupled Process Models of Fluid Flow and Heat Transfer in Hydrothermal Systems in Three Dimensions

机译：三维热液系统中流体流动与传热的耦合过程模型

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摘要

Geothermal fields and hydrothermal mineral deposits are manifestations of the interaction between heat transfer and fluid flow in the Earth's crust. Understanding the factors that drive fluid flow is essential for managing geothermal energy production and for understanding the genesis of hydrothermal mineral systems. We provide an overview of fluid flow drivers with a focus on flow driven by heat and hydraulic head. We show how numerical simulations can be used to compare the effect of different flow drivers on hydrothermal mineralisation. We explore the concepts of laminar flow in porous media (Darcy's law) and the non-dimensional Rayleigh number (Ra) for free thermal convection in the context of fluid flow in hydrothermal systems in three dimensions. We compare models of free thermal convection to hydraulic head driven flow in relation to hydrothermal copper mineralisation at Mount Isa, Australia. Free thermal convection occurs if the permeability of the fault system results in Ra above the critical threshold, whereas a vertical head gradient results in an upward flow field.
机译：地热田和热液矿物沉积物是地壳中传热和流体流动之间相互作用的体现。理解驱动流体流动的因素对于管理地热能生产和理解热液矿物系统的成因至关重要。我们提供了流体流量驱动器的概述，重点是由热量和液压头驱动的流量。我们展示了如何使用数值模拟来比较不同流动驱动因素对热液成矿的影响。我们探讨了在热流体系统中三维流动的情况下，多孔介质中层流的概念（达西定律）和自由热对流的无量纲瑞利数（Ra）。我们对澳大利亚伊萨山的热液铜矿化的自由热对流模型与液压头驱动流进行了比较。如果断层系统的渗透率导致Ra高于临界阈值，则发生自由热对流，而垂直水头梯度导致流场向上。

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