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原文传递 Simulating Oscillatory and Sliding Displacements of Caisson Breakwaters Using a Coupled Approach

题名：	Simulating Oscillatory and Sliding Displacements of Caisson Breakwaters Using a Coupled Approach
正文语种：	英文
作者：	Giovanni Cozzuto1; Aggelos Dimakopoulos2; Tristan De Lataillade3; Pedro Otinar Morillas4; Christopher E. Kees5
作者单位：	1Civil Engineer, Studio Speri Società Di Ingegeneria S.r.l., Lungotevere delle Navi 19, Rome 00196, Italy; formerly, Graduate Engineer, Coastal Structures Group—HR Wallingford, Howbery Park, Wallingford OX10 8BA, UK. 2Senior Engineer, Coastal Structures Group—HR Wallingford, Howbery Park, Wallingford OX10 8BA, UK (corresponding author).3Visiting Researcher, Coastal Structures Group—HR Wallingford, Howbery Park, Wallingford OX10 8BA, UK; Ph.D. Student, IDCORE Graduate School of Engineering, The King’s Buildings Campus, Edinburgh EH9 3JW, UK. 4Visiting Researcher, Coastal Structures Group—HR Wallingford, Howbery Park, Wallingford OX10 8BA, UK. 5Research Hydraulic Engineer, Coastal and Hydraulics Laboratory, Engineering Research and Development Center, USACE, 3909 Halls Ferry Rd., Vicksburg, MS 39180.
关键词：	Caisson breakwater; Impulsive wave; Dynamic response; Overturning; Sliding; Numerical modeling; Proteus computational fluid dynamics (CFD) toolkit
摘要：	In this work, a computational fluid dynamics (CFD) model was coupled with a dynamic response model for simulating oscillatory and sliding motions of a composite caisson breakwater subject to impulsive wave loads. The CFD model was set up with the computational toolkit Proteus, which is a FEM-based software originally developed for solving generic transport equations. It has been recently used for simulating fluid–structure interaction within the context of coastal flows by using mesh deformation and immersed solid techniques. In this study, sliding and overturning of the caisson superstructure were modeled by coupling mesh deformation techniques with a dynamic model for the caisson motion response. Results were compared with experimental data and good agreement was achieved, given the uncertainties involved. These uncertainties were also assessed through a sensitivity analysis of the caisson, which demonstrated the importance of appropriate selection of numerical parameters and precise definition of the material and physical properties. Overall, the modeling approach further advances the state of the art in similar models by being capable of modeling random sea states while using a fully coupled approach for the fluid–structure interaction problem, which also allows the prediction of pore pressure buildup and uplift forces in the rubble foundation.
出版年：	2019
期刊名称：	Journal of Waterway, Port, Coastal, and Ocean Engineering
卷：	145
期：	3
页码：	1-19