The VOLNA code for the numerical modeling of tsunami waves: Generation, propagation and inundation
The VOLNA code for the numerical modeling of tsunami waves: Generation, propagation and inundation
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DOI：
10.1016/j.euromechflu.2011.05.005
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发表时间：
2011-11-01
影响因子：
2.6
通讯作者：
Dias, Frederic
中科院分区：
文献类型：
--
作者：
Dutykh, Denys;Poncet, Raphael;Dias, Frederic
提出了一种新的海啸波模拟工具。这一工具有可能被用于业务目的：事实上，数字代码Volna能够处理海啸的整个生命周期(沿海岸产生、传播和抬高)。该算法适用于非结构化三角网格，因此可以在任意复杂区域中运行。本文对程序中实现的有限体积格式进行了详细描述。对湿/干转变的数值处理进行了说明。这一点对于准确的上车/下车计算至关重要。在这个阶段，大多数海啸法规使用半经验技术，这并不总是足以减轻海啸危险。事实上，疏散居民的决定是基于淹没地图，这些地图是用这些类型的数字工具制作的。我们给出了几个实际的测试案例，部分验证了我们的算法。并与解析解和实验数据进行了比较。最后，对本文的主要结论进行了总结，并对未来的研究提出了展望。(C)2011年爱思唯尔·马森公司。版权所有。
A novel tool for tsunami wave modeling is presented. This tool has the potential of being used for operational purposes: indeed, the numerical code VOLNA is able to handle the complete life cycle of a tsunami (generation, propagation and run-up along the coast). The algorithm works on unstructured triangular meshes and thus can be run in arbitrary complex domains. This paper contains a detailed description of the finite volume scheme implemented in the code. The numerical treatment of the wet/dry transition is explained. This point is crucial for accurate run-up/run-down computations. The majority of tsunami codes use semi-empirical techniques at this stage, which are not always sufficient for tsunami hazard mitigation. Indeed the decision to evacuate inhabitants is based on inundation maps, which are produced with these types of numerical tools. We present several realistic test cases that partially validate our algorithm. Comparisons with analytical solutions and experimental data are performed. Finally, the main conclusions are outlined and the perspectives for future research presented. (C) 2011 Elsevier Masson SAS. All rights reserved.