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E-grāmata: Advanced Numerical Modelling of Wave Structure Interaction

  • Formāts: 270 pages
  • Izdošanas datums: 05-Apr-2021
  • Izdevniecība: CRC Press Inc
  • ISBN-13: 9781351119528
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  • Formāts: 270 pages
  • Izdošanas datums: 05-Apr-2021
  • Izdevniecība: CRC Press Inc
  • ISBN-13: 9781351119528

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This book will serve as a reference guide, and state-of-the-art review, for the wide spectrum of numerical models and computational techniques available to solve some of the most challenging problems in coastal engineering. The topics covered in this book, are explained fundamentally from a numerical perspective and also include practical examples applications. Important classic themes such as wave generation, propagation and breaking, turbulence modelling and sediment transport are complemented by hot topics such as fluid and structure interaction or multi-body interaction to provide an integral overview on numerical techniques for coastal engineering.

Through the vision of 10 high impact authors, each an expert in one or more of the fields included in this work, the chapters offer a broad perspective providing several different approaches, which the readers can compare critically to select the most suitable for their needs. Advanced Numerical Modelling of Wave Structure Interaction will be useful for a wide audience, including PhD students, research scientists, numerical model developers and coastal engineering consultants alike.
Foreword iii
Introduction viii
1 Wave Generation and Absorption Techniques
1(35)
Aggelos Dimakopoulos
Pablo Higuera
1 Introduction
1(1)
2 Review of wave generation and absorption methods
2(1)
2.1 Static boundary wave generation and absorption boundary conditions
3(4)
2.2 Relaxation zones
7(7)
2.3 Internal wave makers
14(4)
2.4 Moving wavemakers with active absorption
18(7)
3 Discussion
25(3)
References
28(8)
2 Wave Propagation Models for Numerical Wave Tanks
36(33)
Eugeny Buldakov
1 Introduction
36(2)
2 Historical development
38(1)
2.1 BEM models
38(1)
2.2 FEM models
39(1)
2.3 Spectral models
40(1)
2.4 Fully Lagrangian models
41(2)
3 Lagrangian numerical wave model
43(1)
3.1 Mathematical formulation
44(2)
3.2 Numerical scheme
46(2)
3.3 Numerical dispersion relation and dispersion correction
48(2)
3.4 Numerical treatment of breaking
50(1)
3.5 Numerical efficiency
51(1)
3.6 Model validation
52(4)
4 Model application to the evolution of extreme wave groups
56(2)
5 Model application to waves on sheared currents
58(4)
6 Concluding remarks
62(2)
References
64(5)
3 Wave Breaking and Air Entrainment
69(17)
Pierre Lubin
1 Introduction
69(1)
2 Physics of breaking
70(1)
2.1 Wave breaker types
70(2)
2.2 Flow structure
72(1)
3 Numerical model
73(2)
4 Wave breaking of unstable sinusoidal wave
75(1)
4.1 Initial configuration
75(1)
4.2 Splash-up and large vortical structures
76(1)
5 A new type of vortical structures under breaking waves
77(1)
6 Discussion and future work
78(3)
References
81(5)
4 Air Compressibility and Aeration Effects in Coastal Flows
86(35)
Zhihua Ma
Ling Qian
Derek Causon
1 Introduction
86(2)
2 Flow model for dispersed water waves
88(1)
2.1 Mathematical model
89(3)
3 Numerical Method
92(1)
3.1 Treatment of the advection equation
92(1)
3.2 Spatial discretisation
93(2)
3.3 The HLLC Riemann solver
95(1)
3.4 Temporal discretisation
96(1)
4 Results
96(1)
4.1 ID problems
96(3)
4.2 Free drop of a water column in a closed tank
99(2)
4.3 Underwater explosion near a planar rigid wall
101(2)
4.4 Water entry of a rigid plate
103(9)
4.5 Plunging wave impact at a vertical wall
112(4)
5 Conclusions
116(1)
References
117(4)
5 Violent Wave Impacts and Loadings using the δ-SPH Method
121(27)
Matteo Antuono
Salvatore Marrone
Andrea Colagrossi
1 Introduction
121(2)
2 Governing equations
123(2)
3 The (5-SPH scheme
125(2)
4 Modelling solid bodies
127(1)
4.1 The ghost-fluid method
128(2)
4.2 Evaluation of Forces and Torques through the ghost-fluid method
130(1)
4.3 Algorithm for fluid-body coupling
131(1)
5 Energy balance
132(2)
6 Applications
134(1)
6.1 Prediction of water impacts
134(7)
6.2 Extreme loads on a Wave Energy Converter (WEC)
141(3)
7 Conclusions
144(1)
References
144(4)
6 Wave and Structure Interaction: Porous Coastal Structures
148(33)
Pablo Higuera
1 Introduction
148(1)
2 Literature review
149(2)
3 Mathematical formulation
151(1)
3.1 Definitions
151(2)
3.2 RANS equations
153(1)
3.3 Volume-Averaged RANS equations
154(1)
3.4 Closure
155(1)
3.5 Turbulence modelling
155(1)
3.6 Discussion
155(2)
4 Numerical model
157(1)
5 Applications: Solitary wave impacting into a rubble mound breakwater
158(1)
5.1 Numerical setup
158(1)
5.2 Numerical results
159(8)
5.3 Concluding remarks
167(1)
6 Applications: Wave and sediment grain interaction by a nonbreaking solitary Wave on a steep slope
167(1)
6.1 Introduction to DEM
167(3)
6.2 Numerical setup
170(1)
6.3 Numerical results
171(4)
6.4 Concluding remarks
175(1)
7 Final remarks
175(1)
References
176(5)
7 CFD Modelling of Scour in Flows with Waves and Currents
181(22)
Nicholas S. Tavouktsoglou
David M. Kelly
John M. Harris
1 Introduction
181(1)
2 Types of sediment transport models in CFD
182(1)
3 The scourFOAM model
183(1)
3.1 Governing equations
184(3)
4 Numerical solution technique
187(1)
4.1 The solver
187(1)
4.2 Boundary and initial conditions
188(1)
4.3 Solution procedure
189(1)
5 Model applications
189(1)
5.1 2D scour application
190(5)
5.2 3D scour around a complex foundation
195(4)
6 Conclusions
199(1)
References
200(3)
8 A Coupling Strategy for Modelling Dynamics of Moored Floating Structures
203(40)
Tristan de Lataillade
Aggelos Dimakopoulos
Chris Kees
Lars Johanning
1 Introduction
203(2)
2 Uncoupled numerical models
205(1)
2.1 Fluid dynamics
205(3)
2.2 Solid dynamics
208(3)
3 An overview of fluid-structure coupling schemes
211(1)
3.1 Monolithic schemes
211(1)
3.2 Partitioned schemes
212(2)
3.3 Coupling instabilities
214(1)
4 Coupling strategy
215(1)
4.1 Fluid-structure coupling
216(2)
4.2 Fluid-mooring coupling
218(2)
4.3 Mooring-structure coupling
220(1)
5 Case studies
221(1)
5.1 Validation of FSI for floating bodies
221(8)
5.2 Validation of mooring model
229(3)
5.3 Moored floating bodies: the OC4-DeepCwind validation case
232(9)
6 Conclusions
241(2)
Appendices
A On limitations and way forward
243(1)
B On software development
244(1)
References
245(3)
Future Prospects
248(9)
1 The lattice Boltzmann method
249(1)
2 Arbitrary and hybrid Lagrangian-Eulerian models
249(1)
3 Direct pressure and pressure-marching methods
250(1)
4 Machine learning
251(1)
5 Coupled models
252(1)
References
253(4)
Index 257
Dr. David M. Kelly received a first-class Bachelors Degree in Environmental Physics with Mathematics from the University of East Anglia Norwich (UK) in 2000. Dr. Kelly later obtained a PhD. in Civil Engineering from the University of Nottingham (UK), with Prof. Nicholas Dodd as his thesis advisor, in January 2009. Dr. Kelly's PhD thesis focused on developing numerical models for swash zone hydro- morphodynamics. Following this Dr. Kelly worked as a research associate on a knowledge transfer partnership (KTP) between the University of Nottingham and HR Wallingford funded by the UK government. Dr. Kelly was then employed by HR Wallingford as a research engineer and later a senior research engineer. During his time at HR Wallingford Dr. Kelly was responsible for the development and maintenance of a number of commercial CFD codes. In particular Dr. Kelly developed a commercial tsunami propagation model and worked on innovative solutions for two-way full Navier Stokes based solvers for fluid structure interactions. Along with Dr. A. Dimakopoulos at HR Wallingford Dr. Kelly co-developed a two phase Navier Stokes solver to simulate oscillating water column wave energy devices for commercial application. Dr. Kelly and colleagues at HR Wallingford and the University of Bath have pioneered the use of hybrid Eulerian-Lagrangian particle in cell (PIC) techniques for coastal engineering applications. Dr. Kelly has worked closely with Électricité de France (EDF) R&D to develop several aspects of the TELEMAC modeling suite. Specifically Dr. Kelly has contributed to the numerical modeling of suspended sediment in TELEMAC 2D and recently the advection and diffusion of tracers in TELEMAC 3D. Dr. Kelly's work forms part of the official TELEMAC modeling suite. Dr Kelly currently works as an Assistant Professor at the International Hurricane Research Center at Florida International University where he is the principal developer of the new dynamic adaptive mesh, massively parallel storm surge model. Dr. Kelly has published work in several prestigious international journals including the Journal of Fluid Mechanics, Computers and Fluids, International Journal for Numerical Methods in Fluids and the SIAM Journal on Scientific Computing (SISC) and co-supervised two PhD students at UK Universities.



Dr. Aggelos Dimakopoulos (A.Dimakopoulos@hrwallingford.com) is a practicing Civil Engineer (MEng, MSc, PhD) and an expert in CFD applications to coastal and open channel flows. He has over 13 years of experience in developing and using CFD models. He graduated as a Doctor of Civil Engineering from the University of Patras, Greece and his PhD thesis was on designing and numerically implementing a novel turbulent modelling approach for wave breaking in the surf zone. After that he spent one year in Instituto Superior Tecnico as a post-doc researcher and in University of Cyprus as a visiting researcher, where he was mainly involved in CFD modelling of channel flow through vegetation arrays. Dr. Dimakopoulos joined HR Wallingford (UK) in May 2012, and since then, he has been involved in a range of commercial and research projects; in particular, he has been involved in developing the CFD capabilities of the company. Dr. Dimakopoulos has been involved in numerous consultancy studies concerning the application of CFD models to assess and optimize the design of coastal and hydraulic structures. He is currently leading a team of 2 engineers and 3 PhD students and he is always interested in the development and the application of CFD models, aiming to reduce uncertainties caused by the interaction of waves, structures and turbulence.



Dr. Pablo Higuera Caubilla (ceephc@nus.edu.sg) graduated in 2010, obtaining a first-in-class degree in Civil Engineering. He immediately pursued a MSc in Coastal and Port Engineering (2012) and a PhD in Civil/Coastal Engineering (2015), all of them at the University of Cantabria (Spain) and linked to the Environmental Hydraulics Institute IH Cantabria.



During his PhD, Dr Higuera studied all sorts of coastal engineering processes using Computational Fluid Dynamics (CFD). As part of his PhD, he developed the open source numerical model ihFoam, based on OpenFOAM framework. Major achievements included the development of new modules for wave generation and active wave absorption, flow through porous media and a thorough validation of the model. After obtaining his PhD, Dr Higuera was a postdoc at Imperial College London, where he studied flow and rock mechanics within armour layers in breakwaters, based on CFD and Finite Element Method - Discrete Elements Method (FEMDEM) models, aiding in the incorporation of hydrodynamic forcings to Solidity Project. Dr Higuera is currently a Research Fellow at the National University of Singapore, where he continues the study of wave-driven hydrodynamics with OpenFOAM. In his free time he continues to contribute to the coastal community with open source developments, now under the name of OlaFoam Project.