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Recent Advances in CFD for Wind and Tidal Offshore Turbines

Author: Esteban Ferrer

Publisher: Springer

Published: 2019-02-06

Total Pages: 148

ISBN-13: 3030118878

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The book presents novel Computational Fluid Dynamics (CFD) techniques to compute offshore wind and tidal applications. The papers in this volume are based on a mini-symposium held at ECCOMAS 2018. Computational fluid dynamics (CFD) techniques are regarded as the main design tool to explore the new engineering challenges presented by offshore wind and tidal turbines for energy generation. The difficulty and costs of undertaking experimental tests in offshore environments have increased the interest in CFD which is used to design appropriate turbines and blades, understand fluid flow physical phenomena associated with offshore environments, predict power production or characterise offshore environments amongst other topics.

Book Synopsis Recent Advances in CFD for Wind and Tidal Offshore Turbines by : Esteban Ferrer

Download or read book Recent Advances in CFD for Wind and Tidal Offshore Turbines written by Esteban Ferrer and published by Springer. This book was released on 2019-02-06 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book presents novel Computational Fluid Dynamics (CFD) techniques to compute offshore wind and tidal applications. The papers in this volume are based on a mini-symposium held at ECCOMAS 2018. Computational fluid dynamics (CFD) techniques are regarded as the main design tool to explore the new engineering challenges presented by offshore wind and tidal turbines for energy generation. The difficulty and costs of undertaking experimental tests in offshore environments have increased the interest in CFD which is used to design appropriate turbines and blades, understand fluid flow physical phenomena associated with offshore environments, predict power production or characterise offshore environments amongst other topics.

CFD for Wind and Tidal Offshore Turbines

Author: Esteban Ferrer

Publisher: Springer

Published: 2015-06-09

Total Pages: 134

ISBN-13: 3319162020

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The book encompasses novel CFD techniques to compute offshore wind and tidal applications. Computational fluid dynamics (CFD) techniques are regarded as the main design tool to explore the new engineering challenges presented by offshore wind and tidal turbines for energy generation. The difficulty and costs of undertaking experimental tests in offshore environments have increased the interest in the field of CFD which is used to design appropriate turbines and blades, understand fluid flow physical phenomena associated with offshore environments, predict power production or characterise offshore environments, amongst other topics.

Book Synopsis CFD for Wind and Tidal Offshore Turbines by : Esteban Ferrer

Download or read book CFD for Wind and Tidal Offshore Turbines written by Esteban Ferrer and published by Springer. This book was released on 2015-06-09 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book encompasses novel CFD techniques to compute offshore wind and tidal applications. Computational fluid dynamics (CFD) techniques are regarded as the main design tool to explore the new engineering challenges presented by offshore wind and tidal turbines for energy generation. The difficulty and costs of undertaking experimental tests in offshore environments have increased the interest in the field of CFD which is used to design appropriate turbines and blades, understand fluid flow physical phenomena associated with offshore environments, predict power production or characterise offshore environments, amongst other topics.

Assessment and Nonlinear Modeling of Wave, Tidal and Wind Energy Converters and Turbines

Author: Madjid Karimirad

Publisher:

Published: 2020

Total Pages: 290

ISBN-13: 9783039369133

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The Special Issue “Assessment and Nonlinear Modeling of Wave, Tidal, and Wind Energy Converters and Turbines” contributes original research to stimulate the continuing progress of the offshore renewable energy (ORE) field, with a focus on state-of-the-art numerical approaches developed for the design and analysis of ORE devices. Particularly, this collection provides new methodologies, analytical/numerical tools, and theoretical methods that deal with engineering problems in the ORE field of wave, wind, and current structures. This Special Issue covers a wide range of multidisciplinary aspects, such as the 1) study of generalized interaction wake model systems with elm variation for offshore wind farms; 2) a flower pollination method based on global maximum power point tracking strategy for point-absorbing type wave energy converters; 3) performance optimization of a Kirsten-Boeing turbine using a metamodel based on neural networks coupled with CFD; 4) proposal of a novel semi-submersible floating wind turbine platform composed of inclined columns and multi-segmented mooring lines; 5) reduction of tower fatigue through blade back twist and active pitch-to-stall control strategy for a semi-submersible floating offshore wind turbine; 6) assessment of primary energy conversion of a closed-circuit OWC wave energy converter; 7) development and validation of a wave-to-wire model for two types of OWC wave energy converters; 8) assessment of a hydrokinetic energy converter based on vortex-induced angular oscillations of a cylinder; 9) application of wave-turbulence decomposition methods on a tidal energy site assessment; 10) parametric study for an oscillating water column wave energy conversion system installed on a breakwater; 11) optimal dimensions of a semisubmersible floating platform for a 10 MW wind turbine; 12) fatigue life assessment for power cables floating in offshore wind turbines.

Book Synopsis Assessment and Nonlinear Modeling of Wave, Tidal and Wind Energy Converters and Turbines by : Madjid Karimirad

Download or read book Assessment and Nonlinear Modeling of Wave, Tidal and Wind Energy Converters and Turbines written by Madjid Karimirad and published by . This book was released on 2020 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Special Issue “Assessment and Nonlinear Modeling of Wave, Tidal, and Wind Energy Converters and Turbines” contributes original research to stimulate the continuing progress of the offshore renewable energy (ORE) field, with a focus on state-of-the-art numerical approaches developed for the design and analysis of ORE devices. Particularly, this collection provides new methodologies, analytical/numerical tools, and theoretical methods that deal with engineering problems in the ORE field of wave, wind, and current structures. This Special Issue covers a wide range of multidisciplinary aspects, such as the 1) study of generalized interaction wake model systems with elm variation for offshore wind farms; 2) a flower pollination method based on global maximum power point tracking strategy for point-absorbing type wave energy converters; 3) performance optimization of a Kirsten-Boeing turbine using a metamodel based on neural networks coupled with CFD; 4) proposal of a novel semi-submersible floating wind turbine platform composed of inclined columns and multi-segmented mooring lines; 5) reduction of tower fatigue through blade back twist and active pitch-to-stall control strategy for a semi-submersible floating offshore wind turbine; 6) assessment of primary energy conversion of a closed-circuit OWC wave energy converter; 7) development and validation of a wave-to-wire model for two types of OWC wave energy converters; 8) assessment of a hydrokinetic energy converter based on vortex-induced angular oscillations of a cylinder; 9) application of wave-turbulence decomposition methods on a tidal energy site assessment; 10) parametric study for an oscillating water column wave energy conversion system installed on a breakwater; 11) optimal dimensions of a semisubmersible floating platform for a 10 MW wind turbine; 12) fatigue life assessment for power cables floating in offshore wind turbines.

Wave and Tidal Energy

Author: Deborah Greaves

Publisher: John Wiley & Sons

Published: 2018-03-28

Total Pages: 720

ISBN-13: 1119014476

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A comprehensive text covering all aspects of wave and tidal energy Wave and Tidal Energy provides a comprehensive and self-contained review of the developing marine renewable energy sector, drawing from the latest research and from the experience of device testing. The book has a twofold objective: to provide an overview of wave and tidal energy suitable for newcomers to the field and to serve as a reference text for advanced study and practice. Including detail on key issues such as resource characterisation, wave and tidal technology, power systems, numerical and physical modelling, environmental impact and policy. The book also includes an up-to-date review of developments worldwide and case studies of selected projects. Key features: A comprehensive and self-contained text covering all aspects of the multidisciplinary fields of wave and tidal energy. Draws upon the latest research in wave and tidal energy and the experience of leading practitioners in numerical and laboratory modelling. Regional developments worldwide are reviewed and representative projects are presented as case studies. Wave and Tidal Energy is an invaluable resource to a wide range of readers, from engineering students to technical managers and policymakers to postgraduate students and researchers.

Book Synopsis Wave and Tidal Energy by : Deborah Greaves

Download or read book Wave and Tidal Energy written by Deborah Greaves and published by John Wiley & Sons. This book was released on 2018-03-28 with total page 720 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive text covering all aspects of wave and tidal energy Wave and Tidal Energy provides a comprehensive and self-contained review of the developing marine renewable energy sector, drawing from the latest research and from the experience of device testing. The book has a twofold objective: to provide an overview of wave and tidal energy suitable for newcomers to the field and to serve as a reference text for advanced study and practice. Including detail on key issues such as resource characterisation, wave and tidal technology, power systems, numerical and physical modelling, environmental impact and policy. The book also includes an up-to-date review of developments worldwide and case studies of selected projects. Key features: A comprehensive and self-contained text covering all aspects of the multidisciplinary fields of wave and tidal energy. Draws upon the latest research in wave and tidal energy and the experience of leading practitioners in numerical and laboratory modelling. Regional developments worldwide are reviewed and representative projects are presented as case studies. Wave and Tidal Energy is an invaluable resource to a wide range of readers, from engineering students to technical managers and policymakers to postgraduate students and researchers.

Offshore Mechanics

Author: Madjid Karimirad

Publisher: John Wiley & Sons

Published: 2018-01-30

Total Pages: 304

ISBN-13: 111921663X

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Covers theoretical concepts in offshore mechanics with consideration to new applications, including offshore wind farms, ocean energy devices, aquaculture, floating bridges, and submerged tunnels This comprehensive book covers important aspects of the required analysis and design of offshore structures and systems and the fundamental background material for offshore engineering. Whereas most of the books currently available in the field use traditional oil, gas, and ship industry examples in order to explain the fundamentals in offshore mechanics, this book uses more recent applications, including recent fixed-bottom and floating offshore platforms, ocean energy structures and systems such as wind turbines, wave energy converters, tidal turbines and hybrid marine platforms. Offshore Mechanics covers traditional and more recent methodologies used in offshore structure modelling (including SPH and hydroelasticity models). It also examines numerical techniques, including computational fluid dynamics and finite element method. Additionally, the book features easy-to-understand exercises and examples. Provides a comprehensive treatment for the case of recent applications in offshore mechanics for researchers and engineers Presents the subject of computational fluid dynamics (CFD) and finite element methods (FEM) along with the high fidelity numerical analysis of recent applications in offshore mechanics Offers insight into the philosophy and power of numerical simulations and an understanding of the mathematical nature of the fluid and structural dynamics with focus on offshore mechanic applications Offshore Mechanics: Structural and Fluid Dynamics for Recent Applications is an important book for graduate and senior undergraduate students in offshore engineering and for offshore engineers and researchers in the offshore industry.

Book Synopsis Offshore Mechanics by : Madjid Karimirad

Download or read book Offshore Mechanics written by Madjid Karimirad and published by John Wiley & Sons. This book was released on 2018-01-30 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: Covers theoretical concepts in offshore mechanics with consideration to new applications, including offshore wind farms, ocean energy devices, aquaculture, floating bridges, and submerged tunnels This comprehensive book covers important aspects of the required analysis and design of offshore structures and systems and the fundamental background material for offshore engineering. Whereas most of the books currently available in the field use traditional oil, gas, and ship industry examples in order to explain the fundamentals in offshore mechanics, this book uses more recent applications, including recent fixed-bottom and floating offshore platforms, ocean energy structures and systems such as wind turbines, wave energy converters, tidal turbines and hybrid marine platforms. Offshore Mechanics covers traditional and more recent methodologies used in offshore structure modelling (including SPH and hydroelasticity models). It also examines numerical techniques, including computational fluid dynamics and finite element method. Additionally, the book features easy-to-understand exercises and examples. Provides a comprehensive treatment for the case of recent applications in offshore mechanics for researchers and engineers Presents the subject of computational fluid dynamics (CFD) and finite element methods (FEM) along with the high fidelity numerical analysis of recent applications in offshore mechanics Offers insight into the philosophy and power of numerical simulations and an understanding of the mathematical nature of the fluid and structural dynamics with focus on offshore mechanic applications Offshore Mechanics: Structural and Fluid Dynamics for Recent Applications is an important book for graduate and senior undergraduate students in offshore engineering and for offshore engineers and researchers in the offshore industry.

MARE-WINT

Author: Wiesław Ostachowicz

Publisher: Springer

Published: 2016-08-30

Total Pages: 432

ISBN-13: 3319390953

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This book provides a holistic, interdisciplinary overview of offshore wind energy, and is a must-read for advanced researchers. Topics, from the design and analysis of future turbines, to the decommissioning of wind farms, are covered. The scope of the work ranges from analytical, numerical and experimental advancements in structural and fluid mechanics, to novel developments in risk, safety & reliability engineering for offshore wind.The core objective of the current work is to make offshore wind energy more competitive, by improving the reliability, and operations and maintenance (O&M) strategies of wind turbines. The research was carried out under the auspices of the EU-funded project, MARE-WINT. The project provided a unique opportunity for a group of researchers to work closely together, undergo multidisciplinary doctoral training, and conduct research in the area of offshore wind energy generation. Contributions from expert, external authors are also included, and the complete work seeks to bridge the gap between research and a rapidly-evolving industry.

Book Synopsis MARE-WINT by : Wiesław Ostachowicz

Download or read book MARE-WINT written by Wiesław Ostachowicz and published by Springer. This book was released on 2016-08-30 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a holistic, interdisciplinary overview of offshore wind energy, and is a must-read for advanced researchers. Topics, from the design and analysis of future turbines, to the decommissioning of wind farms, are covered. The scope of the work ranges from analytical, numerical and experimental advancements in structural and fluid mechanics, to novel developments in risk, safety & reliability engineering for offshore wind.The core objective of the current work is to make offshore wind energy more competitive, by improving the reliability, and operations and maintenance (O&M) strategies of wind turbines. The research was carried out under the auspices of the EU-funded project, MARE-WINT. The project provided a unique opportunity for a group of researchers to work closely together, undergo multidisciplinary doctoral training, and conduct research in the area of offshore wind energy generation. Contributions from expert, external authors are also included, and the complete work seeks to bridge the gap between research and a rapidly-evolving industry.

Development and Verification of a CFD Based Simulation Software for Floating Offshore Wind Turbines

Author: Sean M. Quallen

Publisher:

Published: 2015

Total Pages: 316

ISBN-13: 9781339018805

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A coupled aerodynamic-hydrodynamic-servo simulation software capable of motion and performance predictions for floating offshore wind turbines (FOWT) is developed. The computational fluid dynamics (CFD) solver CFDShip-Iowa is used for pressure, velocity, and motion predictions. A multi-segmented mooring line model (crowfoot) is designed for securing the turbine and limiting motions. Variable-speed (VS) and blade-pitch (BP) controllers designed by the National Renewable Energy Laboratory (NREL) are also utilized to help maximize power and to prevent generator overload. The developed software is demonstrated with multiple simulation load cases (LC) from the Offshore Code Comparison Collaboration (OC3), increasing complexity with each simulation. Free-decay tests are first performed for hydrodynamic validation against experimental data provided by the OC3 using a coarse grid set. A URANS simulation featuring steady wind and regular wave patterns, modeled after the OC3's LC 5.1, is performed with a fixed rotor rotational velocity. The motion and aerodynamic power predictions are compared to those of NREL's OC3 results. A finer gridset is constructed and utilized in a study of offshore blade-tower interaction (BTI) to determine the effect of unsteady platform motions on the aerodynamic disruption caused by the blade passing directly upwind of the tower. The results show that BTI effects are strongly affected by platform motions, notably in pitch, and that BTI is more significantly affected by platform velocities than by overall displacements. This finer gridset is again utilized, but combined with a VS controller in a duplicate LC 5.1 simulation using DDES. The drivetrain is modeled with rotational inertia allowing for prediction of the rotor velocity based on developed generator torque. Generator torque and power predictions are compared to NREL's results. The present results agree in frequency trends but predict separation on blades during platform upstream pitching and surging. The BP controller is employed in a simulation modeled after the OC3's LC 5.2, which uses irregular waves and the Mann wind turbulence model. Results are transformed to the frequency domain for comparison with NREL. The present results agree with NREL generated torque and power. Grid dissipation and modeling error in the present study produce less overall wind and wave fluctuations.

Book Synopsis Development and Verification of a CFD Based Simulation Software for Floating Offshore Wind Turbines by : Sean M. Quallen

Download or read book Development and Verification of a CFD Based Simulation Software for Floating Offshore Wind Turbines written by Sean M. Quallen and published by . This book was released on 2015 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt: A coupled aerodynamic-hydrodynamic-servo simulation software capable of motion and performance predictions for floating offshore wind turbines (FOWT) is developed. The computational fluid dynamics (CFD) solver CFDShip-Iowa is used for pressure, velocity, and motion predictions. A multi-segmented mooring line model (crowfoot) is designed for securing the turbine and limiting motions. Variable-speed (VS) and blade-pitch (BP) controllers designed by the National Renewable Energy Laboratory (NREL) are also utilized to help maximize power and to prevent generator overload. The developed software is demonstrated with multiple simulation load cases (LC) from the Offshore Code Comparison Collaboration (OC3), increasing complexity with each simulation. Free-decay tests are first performed for hydrodynamic validation against experimental data provided by the OC3 using a coarse grid set. A URANS simulation featuring steady wind and regular wave patterns, modeled after the OC3's LC 5.1, is performed with a fixed rotor rotational velocity. The motion and aerodynamic power predictions are compared to those of NREL's OC3 results. A finer gridset is constructed and utilized in a study of offshore blade-tower interaction (BTI) to determine the effect of unsteady platform motions on the aerodynamic disruption caused by the blade passing directly upwind of the tower. The results show that BTI effects are strongly affected by platform motions, notably in pitch, and that BTI is more significantly affected by platform velocities than by overall displacements. This finer gridset is again utilized, but combined with a VS controller in a duplicate LC 5.1 simulation using DDES. The drivetrain is modeled with rotational inertia allowing for prediction of the rotor velocity based on developed generator torque. Generator torque and power predictions are compared to NREL's results. The present results agree in frequency trends but predict separation on blades during platform upstream pitching and surging. The BP controller is employed in a simulation modeled after the OC3's LC 5.2, which uses irregular waves and the Mann wind turbulence model. Results are transformed to the frequency domain for comparison with NREL. The present results agree with NREL generated torque and power. Grid dissipation and modeling error in the present study produce less overall wind and wave fluctuations.

Aerodynamics of Wind Turbines, 2nd edition

Author: Martin O. L. Hansen

Publisher: Routledge

Published: 2013-05-13

Total Pages: 192

ISBN-13: 1136572260

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Aerodynamics of Wind Turbines is the established essential text for the fundamental solutions to efficient wind turbine design. Now in its second edition, it has been entirely updated and substantially extended to reflect advances in technology, research into rotor aerodynamics and the structural response of the wind turbine structure. Topics covered include increasing mass flow through the turbine, performance at low and high wind speeds, assessment of the extreme conditions under which the turbine will perform and the theory for calculating the lifetime of the turbine. The classical Blade Element Momentum method is also covered, as are eigenmodes and the dynamic behaviour of a turbine. The new material includes a description of the effects of the dynamics and how this can be modelled in an ?aeroelastic code?, which is widely used in the design and verification of modern wind turbines. Further, the description of how to calculate the vibration of the whole construction, as well as the time varying loads, has been substantially updated.

Book Synopsis Aerodynamics of Wind Turbines, 2nd edition by : Martin O. L. Hansen

Download or read book Aerodynamics of Wind Turbines, 2nd edition written by Martin O. L. Hansen and published by Routledge. This book was released on 2013-05-13 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt: Aerodynamics of Wind Turbines is the established essential text for the fundamental solutions to efficient wind turbine design. Now in its second edition, it has been entirely updated and substantially extended to reflect advances in technology, research into rotor aerodynamics and the structural response of the wind turbine structure. Topics covered include increasing mass flow through the turbine, performance at low and high wind speeds, assessment of the extreme conditions under which the turbine will perform and the theory for calculating the lifetime of the turbine. The classical Blade Element Momentum method is also covered, as are eigenmodes and the dynamic behaviour of a turbine. The new material includes a description of the effects of the dynamics and how this can be modelled in an ?aeroelastic code?, which is widely used in the design and verification of modern wind turbines. Further, the description of how to calculate the vibration of the whole construction, as well as the time varying loads, has been substantially updated.

Offshore Wind Energy Technology

Author: Olimpo Anaya-Lara

Publisher: John Wiley & Sons

Published: 2018-05-11

Total Pages: 456

ISBN-13: 1119097789

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A COMPREHENSIVE REFERENCE TO THE MOST RECENT ADVANCEMENTS IN OFFSHORE WIND TECHNOLOGY Offshore Wind Energy Technology offers a reference based on the research material developed by the acclaimed Norwegian Research Centre for Offshore Wind Technology (NOWITECH) and material developed by the expert authors over the last 20 years. This comprehensive text covers critical topics such as wind energy conversion systems technology, control systems, grid connection and system integration, and novel structures including bottom-fixed and floating. The text also reviews the most current operation and maintenance strategies as well as technologies and design tools for novel offshore wind energy concepts. The text contains a wealth of mathematical derivations, tables, graphs, worked examples, and illustrative case studies. Authoritative and accessible, Offshore Wind Energy Technology: Contains coverage of electricity markets for offshore wind energy and then discusses the challenges posed by the cost and limited opportunities Discusses novel offshore wind turbine structures and floaters Features an analysis of the stochastic dynamics of offshore/marine structures Describes the logistics of planning, designing, building, and connecting an offshore wind farm Written for students and professionals in the field, Offshore Wind Energy Technology is a definitive resource that reviews all facets of offshore wind energy technology and grid connection.

Book Synopsis Offshore Wind Energy Technology by : Olimpo Anaya-Lara

Download or read book Offshore Wind Energy Technology written by Olimpo Anaya-Lara and published by John Wiley & Sons. This book was released on 2018-05-11 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt: A COMPREHENSIVE REFERENCE TO THE MOST RECENT ADVANCEMENTS IN OFFSHORE WIND TECHNOLOGY Offshore Wind Energy Technology offers a reference based on the research material developed by the acclaimed Norwegian Research Centre for Offshore Wind Technology (NOWITECH) and material developed by the expert authors over the last 20 years. This comprehensive text covers critical topics such as wind energy conversion systems technology, control systems, grid connection and system integration, and novel structures including bottom-fixed and floating. The text also reviews the most current operation and maintenance strategies as well as technologies and design tools for novel offshore wind energy concepts. The text contains a wealth of mathematical derivations, tables, graphs, worked examples, and illustrative case studies. Authoritative and accessible, Offshore Wind Energy Technology: Contains coverage of electricity markets for offshore wind energy and then discusses the challenges posed by the cost and limited opportunities Discusses novel offshore wind turbine structures and floaters Features an analysis of the stochastic dynamics of offshore/marine structures Describes the logistics of planning, designing, building, and connecting an offshore wind farm Written for students and professionals in the field, Offshore Wind Energy Technology is a definitive resource that reviews all facets of offshore wind energy technology and grid connection.

CFD Simulation of Wave Run-up on an Offshore Wind Turbine Foundation by Using a Piston Type Wave-Maker Over a Sloping Bottom

Author:

Publisher:

Published: 2021

Total Pages: 116

ISBN-13:

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Book Synopsis CFD Simulation of Wave Run-up on an Offshore Wind Turbine Foundation by Using a Piston Type Wave-Maker Over a Sloping Bottom by :

Download or read book CFD Simulation of Wave Run-up on an Offshore Wind Turbine Foundation by Using a Piston Type Wave-Maker Over a Sloping Bottom written by and published by . This book was released on 2021 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt: