Boussinesq modelling of tsunami and storm wave impact
Boussinesq modelling of tsunami and storm wave impact
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DOI：
10.1680/eacm.13.00025
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发表时间：
2014-09
期刊：
影响因子：
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通讯作者：
Maurice Mccabe;P. Stansby;B. Rogers;L. Cunningham
中科院分区：
文献类型：
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作者：
Maurice Mccabe;P. Stansby;B. Rogers;L. Cunningham
英国的许多海岸防护结构都是为具有适当重现期的风暴潮而设计的，但它们在海啸类型的海浪中的性能尚不确定。浅水和Boussinesq模式非常适合于近岸风暴波和海啸波的研究。利用该模型比较了孤立波和风暴波对海岸建筑物的影响。给出了两种波浪的爬升参数，并与实验数据进行了比较，两者吻合较好。模型背后的方程是在假定床面坡度较小的情况下推导出来的，因此不适合于模拟波浪与垂直和近垂直结构物的相互作用。然而，引入反向动量项，以考虑典型的破碎波冲击结构物的水射流，可以很好地预测波浪漫顶体积，尽管它对作用在结构物上的力有很小的影响。通过与实验数据的比较，验证了该方法的有效性。
Many coastal protection structures in the UK have been designed for storm surges with appropriate return periods, but their performance during tsunami-type waves is uncertain. A shallow water and Boussinesq model is well suited to the investigation of both near-shore storm waves and tsunami waves. This paper makes use of the model to compare the effect on coastal structures of solitary waves and storm waves. Wave run-up parameters for both types of wave are generated and shown to be in good agreement with experimental data. The equations behind the model were derived assuming a small bed slope and therefore are not suitable for modelling waves interacting with vertical and near-vertical structures. However, the introduction of a reverse momentum term, to take account of a jet of water typical of a breaking wave impacting against a structure, allows wave overtopping volumes to be well predicted, although it had a minor effect on the forces acting on the structure. Comparisons with experimental data, for bo...