Finite element analysis of heat transfer and mineralization in layered hydrothermal systems with upward throughflow

被引：28
|
作者：
Zhao, CB [1 ]
Hobbs, BE [1 ]
Muhlhaus, HB [1 ]
机构：
[1] CSIRO, Div Explorat & Min, Nedlands, WA 6009, Australia
来源：
COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING | 2000年 / 186卷 / 01期
关键词：
neat transfer; pore-fluid flow; gold mineralization; numerical analysis; benchmark solution;
D O I：
10.1016/S0045-7825(99)00104-8
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We use the finite element method to solve the coupled problem between convective pore-fluid flow, heat transfer and mineralization in layered hydrothermal systems with upward throughflow. In particular, we present the improved rock alteration index (IRAI) concept for predicting the most probable precipitation and dissolution regions of gold (Au) minerals in the systems. To validate the numerical method used in the computation, analytical solutions to a benchmark problem have been derived. After the numerical method is validated, it is used to investigate the pattern of pore-fluid Aom, the distribution of temperature and the mineralization pattern of gold minerals in a layered hydrothermal system with upward throughflow. The related numerical results have demonstrated that the present concept of IRAI is useful and applicable for predicting the most probable precipitation and dissolution regions of gold (Au) minerals in hydrothermal systems. (C) 2000 Elsevier Science S.A. All rights reserved.
引用
收藏
页码：49 / 64
页数：16
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