Abstract Many high temperature geothermal fields generally occur at settings of recent active tectonism or volcanism accompanied by the active faults and fractures. It is well known that the structural controls such as topography, active faults, etc., have a major effect on fluid flow pathways in those systems. In this paper, a complete hydro-thermo-geophysical model is created for the first time in the Gediz Graben, Western Anatolia. The finite volume method is used for numerical simulations by implementing a finite volume code, ANSYS-Fluent. The thermal and physical rock properties used in the model are taken from previous studies. Fluid flow velocity vectors and resulted temperature patterns for the region are calculated and presented. Our simulations demonstrate that the low-angle Master Graben Boundary Fault (MGBF) has three dominant roles 1) transporting the meteoric water to the depths; 2) distributing the heated geothermal water into the basin with inner basin faults, 3) transmitting the heated water to the surface. The model in this work can be easily adopted and extended to explore the possible reservoir structures in other geothermal areas.

中文翻译：

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对 Gediz Graben 断层控制地热流体循环有限体积建模的综合地球物理、水文、热学方法

摘要 许多高温地热田一般出现在近期活动构造或火山活动的背景下，并伴有活动断层和裂缝。众所周知，地形、活动断层等结构控制对这些系统中的流体流动路径有重大影响。本文首次在安纳托利亚西部的 Gediz Graben 建立了完整的水-热-地球物理模型。有限体积法通过实施有限体积代码 ANSYS-Fluent 用于数值模拟。模型中使用的热力学和物理岩石属性取自先前的研究。计算并呈现该区域的流体流动速度矢量和由此产生的温度模式。我们的模拟表明，低角度地堑边界断层（MGBF）具有三个主要作用：1）将大气水输送到深处；2) 将加热的地热水分配到具有内盆地断层的盆地中， 3) 将加热的水输送到地表。这项工作中的模型可以很容易地采用和扩展，以探索其他地热区可能的储层结构。