Large eddy simulation of extreme hydrodynamic forces on structures with mitigation walls using OpenFOAM

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• 作者：Samieh Sarjamee ; Ioan Nistor ; Abdolmajid Mohammadian
• 关键词：Hydrodynamic loading ; Tsunami ; Extreme hydrodynamic forces ; OpenFOAM ; Force–time histories ; Mitigation wall ; Large eddy simulation ; RANS
• 刊名：Natural Hazards
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：85
• 期：3
• 页码：1689-1707
• 全文大小：
• 刊物类别：Earth and Environmental Science
• 刊物主题：Natural Hazards; Hydrogeology; Geophysics/Geodesy; Geotechnical Engineering & Applied Earth Sciences; Civil Engineering; Environmental Management;
• 出版者：Springer Netherlands
• ISSN：1573-0840
• 卷排序：85

文摘

The objective of this study is to evaluate the performance of a large eddy simulation (LES) numerical model to assess the influence of mitigation walls with various cross sections on the tsunami-induced loading exerted on a freestanding structure. The validation of the model was performed using laboratory experiment results previously conducted by the second author. The employed experiments simulated a tsunami-like bore at two different impoundment depths, including 55 and 85 cm. The results showed that the one-equation subgrid-scale energy transport LES approach performs better than RANS models such as k-ε, k-ω and LRR and can accurately reproduce experimental data obtained for a wide range of experimental conditions.