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首页> 外文期刊>Memoirs of the Faculty of Engineering KYUSHU University >A Numerical Model of Magmatic Hydrothermal System and Its Application to Kuju Volcano, Central Kyushu, Japan
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A Numerical Model of Magmatic Hydrothermal System and Its Application to Kuju Volcano, Central Kyushu, Japan

机译：岩浆热液系统的数值模型及其在日本九州中部九州火山中的应用

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摘要

The objective of this study is to develop a new numerical simulator for the investigation of thermal processes in the high temperature reservoir, which is part of the magmatic hydrothermal system. In this study, the finite difference method (FDM) based on the mass and heat balance equations is used to obtain the pressure and the enthalpy distribution in the reservoir. The derived pressure and enthalpy are used to calculate the other parameters (thermodynamic properties of fluid). These parameters represent the thermal state of the fluid in the reservoir (liquid phase, two phase and superheated steam conditions). The development of the magmatic hydrothermal system is calculated by using the transient flow rate of magmatic water discharged from a magma chamber as a boundary condition at the bottom of the reservoir. This concept is applied to simulate the thermal processes beneath Kuju volcano, central Kyushu, Japan. In the numerical simulation, the initial condition of the reservoir is a liquid phase. Accompanying the development of the reservoir supplied by magmatic water, the fluid phase in the reservoir changes with time from liquid to two phase and superheated state. These processes interpret the development of magmatic hydrothermal system beneath Kuju volcano.
机译：这项研究的目的是开发一种新的数值模拟器，用于研究高温储层的热过程，该储层是岩浆热液系统的一部分。在这项研究中，基于质量和热量平衡方程的有限差分法（FDM）用于获得储层中的压力和焓分布。导出的压力和焓用于计算其他参数（流体的热力学性质）。这些参数表示储层中流体的热状态（液相，两相和过热蒸汽条件）。岩浆热液系统的发展是通过利用从岩浆室排出的岩浆水的瞬时流量作为储层底部的边界条件来计算的。该概念用于模拟日本九州中部九州火山下的热过程。在数值模拟中，储层的初始条件为液相。伴随岩浆水供应的储层的发展，储层中的流体相随时间从液相变为两相并处于过热状态。这些过程解释了九州火山下岩浆热液系统的发展。

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