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Key Features

Consolidates in one volume information and techniques for the numerical modelling of wave energy converters and converter arrays, which has, up until now, been spread around multiple academic journals and conference proceedings making it difficult to access
Presents a comparative review of the different numerical modelling techniques applied to wave energy converters, discussing their limitations, current available tools, examples, and verification, validation, and computational requirements
Includes practical examples and simulations available for download at the book's companion website
Identifies key points of each modelling technique without getting deeply involved in the mathematical representation
Description

Numerical Modelling of Wave Energy Converters: State-of-the Art Techniques for Single WEC and Converter Arrays presents all the information and techniques required for the numerical modelling of a wave energy converter together with a comparative review of the different available techniques. The authors provide clear details on the subject and guidance on its use for WEC design, covering topics such as boundary element methods, frequency domain models, spectral domain models, time domain models, non linear potential flow models, CFD models, semi analytical models, phase resolving wave propagation models, phase averaging wave propagation models, parametric design and control optimization, mean annual energy yield, hydrodynamic loads assessment, and environmental impact assessment.
Each chapter starts by defining the fundamental principles underlying the numerical modelling technique and finishes with a discussion of the technique's limitations and a summary of the main points in the chapter. The contents of the chapters are not limited to a description of the mathematics, but also include details and discussion of the current available tools, examples available in the literature, and verification, validation, and computational requirements. In this way, the key points of each modelling technique can be identified without having to get deeply involved in the mathematical representation that is at the core of each chapter.
The book is separated into four parts. The first two parts deal with modelling single wave energy converters; the third part considers the modelling of arrays; and the final part looks at the application of the different modelling techniques to the four most common uses of numerical models. It is ideal for graduate engineers and scientists interested in numerical modelling of wave energy converters, and decision-makers who must review different modelling techniques and assess their suitability and output.



Numerical Modelling of Wave Energy Converters, 1st Edition

Chapter 1: Introduction
Abstract
1.1 The Challenge of Wave Energy
1.2 A Short History of the Numerical Modelling of WECs
1.3 Current Challenges and Future Developments
1.4 Why This Book
1.5 How to Use This Book
1.6 Acknowledgements
I: Wave Energy Converter Modelling Techniques Based on Linear Hydrodynamic Theory
Chapter 2: Frequency-Domain Models
Abstract
2.1 Introduction and Fundamental Principles
2.2 Phenomenological Discussion
2.3 Potential Flow Theory
2.4 Equation of Motion: Single Degree-of-Freedom WEC
2.5 Equation of Motion: Multiple Degree-of-Freedom WEC
2.6 OWCs
2.7 Limitations
2.8 Summary
Chapter 3: Time-Domain Models
Abstract
3.1 Introduction and Fundamental Principles
3.2 The Cummins Equation for Modelling WECs
3.3 Wave Excitation Forces
3.4 The RIRF
3.5 Convolution of the Radiation Forces
3.6 Hydrostatic Forces
3.7 Solution of the Cummins Equation
3.8 Case-Study: A Single-Body Heaving WEC
3.9 The Influence of Simulation Duration
3.10 Limitations
3.11 Summary
Chapter 4: Spectral-Domain Models
Abstract
4.1 Introduction and Fundamental Principles
4.2 Formulation of the Spectral-Domain Model
4.3 Solving a Spectral-Domain Model
4.4 Examples of Spectral-Domain Modelling
4.5 Further Developments
4.6 Limitations
4.7 Summary
II: Other Wave Energy Converter Modelling Techniques
Chapter 5: Nonlinear Potential Flow Models
Abstract
5.1 Introduction and Fundamental Principles
5.2 Formulation of the Fully Nonlinear Potential Flow Model
5.3 Solution Methods For Fully Nonlinear Potential Flow Problems
5.4 Calculating the WEC Response
5.5 Limitations
5.6 Summary
Chapter 6: Computational Fluid Dynamics (CFD) Models
Abstract
6.1 Introduction and Fundamental Principles
6.2 Incompressible CFD Models
6.3 Compressible Two-Phase CFD Models
6.4 Smoothed-Particle Hydrodynamic Models
6.5 Limitations
6.6 Future Developments
6.7 Summary
Chapter 7: Identifying Models Using Recorded Data
Abstract
7.1 Introduction and Fundamental Principles
7.2 Data Generation
7.3 Models for System Identification
7.4 Identification Algorithms
7.5 Case Studies
7.6 Limitations
7.7 Summary
III: Wave Energy Converter Array Modelling Techniques
Chapter 8: Conventional Multiple Degree-of-Freedom Array Models
Abstract
8.1 Introduction and Fundamental Principles
8.2 Modelling Based on Linear Potential Flow
8.3 Modelling Based on Other Techniques
8.4 Limitations
8.5 Summary
Chapter 9: Semi-analytical Array Models
Abstract
9.1 Introduction
9.2 General Formulation
9.3 Point Absorber Method
9.4 Plane Wave Method
9.5 Multiple Scattering Method
9.6 Direct Matrix Method
9.7 Capabilities and Limitations
9.8 Summary
Chapter 10: Phase-Resolving Wave Propagation Array Models
Abstract
10.1 Introduction
10.2 Implementation of the WEC Simulation in the Wave Propagation Model MILDwave
10.3 Applications of the Numerical Techniques Using MILDwave
10.4 Limitations
10.5 Summary
Chapter 11: Phase-Averaging Wave Propagation Array Models
Abstract
11.1 Introduction and Fundamental Principles
11.2 Supragrid Models of WEC Arrays
11.3 Subgrid Models of WEC Arrays
11.4 Limitations
11.5 Summary
IV: Applications for Wave Energy Converter Models
Chapter 12: Control Optimisation and Parametric Design
Abstract
12.1 Introduction
12.2 Control of WECs
12.3 Optimization of WECs and WEC Arrays
Chapter 13: Determining Mean Annual Energy Production
Abstract
13.1 Introduction and Appropriate Modelling Techniques
13.2 Representation of the Wave Climate
13.3 Representation of Power Performance
13.4 Estimation of the MAEP
13.5 Limitations and Constraints
13.6 Summary
Chapter 14: Determining Structural and Hydrodynamic Loads
Abstract
14.1 Introduction
14.2 Design Principles
14.3 Site Characterization
14.4 Device Considerations
14.5 Design Criteria
14.6 Structural Assessment
14.7 Summary
Chapter 15: Environmental Impact Assessment
Abstract
15.1 Introduction
15.2 Ecological Processes
15.3 Modelling Approach
15.4 Limitations
15.5 Summary
Index