Fast numerical simulation of crustal deformation using a three-dimensional high-fidelity model
Fast numerical simulation of crustal deformation using a three-dimensional high-fidelity model
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DOI：
10.1093/gji/ggt320
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发表时间：
2013-12
影响因子：
2.8
通讯作者：
T. Ichimura;R. Agata;T. Hori;K. Hirahara;M. Hori
中科院分区：
文献类型：
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作者：
T. Ichimura;R. Agata;T. Hori;K. Hirahara;M. Hori
随着高分辨率观测资料的积累，对利用三维高分辨率模型进行地壳形变数值模拟的需求日益增加。本文提出了一种无需计算机辅助设计模型或人工调整的三维高精度有限元模型的网格自动生成方法，并将其应用于地壳形变的快速数值模拟。通过基于几何多重网格、变量预处理和多精度算法的迭代求解器加速计算。在验证了该方法的准确性后，我们对一个大地震的地壳形变进行了数值模拟，以证明其有效性。
The accumulation of observational data at high resolution has increased the demand for numerical simulation of crustal deformation using 3-D high-fidelity models. In this study, an automatic mesh-generation method for a 3-D high-fidelity finite element model without computer-aided design model or manual tuning was developed and then used in a fast numerical simulation of crustal deformation. The calculation is accelerated by an iterative solver based on a geometric multigrid, variable preconditioning and multiple-precision arithmetic. After verifying the accuracy of the proposed method, we conducted a numerical simulation of the crustal deformation of a giant earthquake to demonstrate its usefulness.