An Integrated Nonlinear Wind Waves Model For Offshore Wind Turbines

Author : Enzo Marino
Publisher : Firenze University Press
Page : 232 pages
File Size : 51,5 Mb
Release : 2010
Category : Coastal engineering
ISBN : 9788866550518

Get Book

An Integrated Nonlinear Wind-Waves Model for Offshore Wind Turbines by Enzo Marino Pdf

This thesis presents a numerical model capable of simulating offshore wind turbines exposed to extreme loading conditions. External condition-based extreme responses are reproduced by coupling a fully nonlinear wave kinematic solver with a hydro-aero-elastic simulator. First, a two-dimensional fully nonlinear wave simulator is developed. The transient nonlinear free surface problem is formulated assuming the potential theory and a high-order boundary element method is implemented to discretize Laplace's equation. For temporal evolution a second-order Taylor series expansion is used. The code, after validation with experimental data, is successfully adopted to simulate overturning plunging breakers which give rise to dangerous impact loads when they break against wind turbine substructures. Emphasis is then placed on the random nature of the waves. Indeed, through a domain decomposition technique a global simulation framework embedding the numerical wave simulator into a more general stochastic environment is developed. The proposed model is meant as a contribution to meet the more and more pressing demand for research in the offshore wind energy sector as it permits taking into account dangerous effects on the structural response so as to increase the global structural safety level.

Author : Francesco Ricciardelli,Alberto Maria Avossa
Publisher : Springer
Page : 755 pages
File Size : 49,9 Mb
Release : 2019-03-12
Category : Science
ISBN : 9783030128159

Get Book

Proceedings of the XV Conference of the Italian Association for Wind Engineering by Francesco Ricciardelli,Alberto Maria Avossa Pdf

This volume gathers the latest advances, innovations, and applications in the field of wind engineering, as presented by leading international researchers and engineers at the XV Conference of the Italian Association for Wind Engineering (IN-VENTO 2018), held in Naples, Italy on September 9-12, 2018. It covers highly diverse topics, including aeroelasticity, bluff-body aerodynamics, boundary layer wind tunnel testing, computational wind engineering, structural dynamics and reliability, wind-structure interaction, flow-induced vibrations, wind modeling and forecast, wind disaster mitigation, and wind climate assessment. The contributions, which were selected by means of a rigorous international peer-review process, highlight numerous exciting ideas that will spur novel research directions and foster multidisciplinary collaboration among different specialists.

Author : Madjid Karimirad,Maurizio Collu
Publisher : Unknown
Page : 290 pages
File Size : 53,8 Mb
Release : 2020-09-04
Category : Electronic
ISBN : 3039369121

Get Book

Assessment and Nonlinear Modeling of Wave, Tidal and Wind Energy Converters and Turbines by Madjid Karimirad,Maurizio Collu Pdf

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.

Author : Charalambos Baniotopoulos,Claudio Borri,Theodore Stathopoulos
Publisher : Springer Science & Business Media
Page : 353 pages
File Size : 48,8 Mb
Release : 2011-12-01
Category : Technology & Engineering
ISBN : 9783709109533

Get Book

Environmental Wind Engineering and Design of Wind Energy Structures by Charalambos Baniotopoulos,Claudio Borri,Theodore Stathopoulos Pdf

The book presents a state-of-the-art in environmental aerodynamics and the structural design of wind energy support structures, particularly from a modern computational perspective. Examples include real-life applications dealing with pollutant dispersion in the building environment, pedestrian-level winds, comfort levels, relevant legislation and remedial measures. Design methodologies for wind energy structures include reliability assessment and code frameworks.

Author : Martin Johannes Kühn
Publisher : Unknown
Page : 282 pages
File Size : 52,7 Mb
Release : 2001
Category : Wind energy conversion systems
ISBN : 9076468079

Get Book

Dynamics and Design Optimisation of Offshore Wind Energy Conversion Systems by Martin Johannes Kühn Pdf

Author : Olimpo Anaya-Lara,John Olav Tande,Kjetil Uhlen,Karl Merz
Publisher : John Wiley & Sons
Page : 456 pages
File Size : 50,9 Mb
Release : 2018-05-11
Category : Science
ISBN : 9781119097785

Get Book

Offshore Wind Energy Technology by Olimpo Anaya-Lara,John Olav Tande,Kjetil Uhlen,Karl Merz Pdf

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.

Author : Madjid Karimirad
Publisher : Springer
Page : 307 pages
File Size : 43,7 Mb
Release : 2014-12-05
Category : Technology & Engineering
ISBN : 9783319121758

Get Book

Offshore Energy Structures by Madjid Karimirad Pdf

This book provides all the key information needed to design offshore structures for renewable energy applications successfully. Suitable for practicing engineers and students, the author conveys design principles and best practices in a clear, concise manner, focusing on underlying physics while eschewing complicated mathematical detail. The text connects underlying scientific theory with industry standards and practical implementation issues for offshore wind turbines, wave energy converters and current turbines. Combined concepts such as wave-wind energy platforms are discussed, as well. Coverage of design codes and numerical tools ensures the usefulness of this resource for all those studying and working in the rapidly expanding field of offshore renewable energy.

Author : Joao Cruz,Mairead Atcheson
Publisher : Springer
Page : 341 pages
File Size : 47,5 Mb
Release : 2016-08-20
Category : Technology & Engineering
ISBN : 9783319293981

Get Book

Floating Offshore Wind Energy by Joao Cruz,Mairead Atcheson Pdf

This book provides a state-of-the-art review of floating offshore wind turbines (FOWT). It offers developers a global perspective on floating offshore wind energy conversion technology, documenting the key challenges and practical solutions that this new industry has found to date. Drawing on a wide network of experts, it reviews the conception, early design stages, load & structural analysis and the construction of FOWT. It also presents and discusses data from pioneering projects. Written by experienced professionals from a mix of academia and industry, the content is both practical and visionary. As one of the first titles dedicated to FOWT, it is a must-have for anyone interested in offshore renewable energy conversion technologies.

Author : Kenneth Eloghene Okedu
Publisher : BoD – Books on Demand
Page : 198 pages
File Size : 54,5 Mb
Release : 2018-10-10
Category : Technology & Engineering
ISBN : 9781789841473

Get Book

Stability Control and Reliable Performance of Wind Turbines by Kenneth Eloghene Okedu Pdf

This book is intended for academics and engineers working in universities, research institutes, and industry sectors wishing to acquire new information and enhance their knowledge of the current trends in wind turbine technology. Readers will gain new ideas and special experience with in-depth information about modeling, stability control, assessment, reliability, and future prospects of wind turbines. This book contains a number of problems and solutions that can be integrated into larger research findings and projects. The book enhances studies concerning the state of the art of wind turbines, modeling and intelligent control of wind turbines, power quality of wind turbines, robust controllers for wind turbines in cold weather, etc. The book also looks at recent developments in wind turbine supporting structures, noise reduction estimation methods, reliability and prospects of wind turbines, etc. As I enjoyed preparing this book, I am sure that it will be valuable for a large sector of readers.

Author : Paul A. Lynn
Publisher : John Wiley & Sons
Page : 237 pages
File Size : 42,9 Mb
Release : 2011-12-12
Category : Technology & Engineering
ISBN : 9780470976081

Get Book

Onshore and Offshore Wind Energy by Paul A. Lynn Pdf

A highly accessible and authoritative account of wind energy’s scientific background, current technology, and international status, with an emphasis on large turbines and wind farms, both onshore and offshore Topics covered include: a brief history of wind energy the nature of the wind turbine aerodynamics, mechanics, and electrics wind farms offshore opportunities and challenges grid integration of wind energy economic and environmental aspects Whilst intellectually rigorous, this is not an academic treatise. Key equations are fully discussed, providing essential theoretical background. The text is supported by copious illustrations and about 50 inspiring full-colour photographs from around the world. This book is aimed at a wide readership including professionals, policy makers and employees in the energy sector in need of a basic appreciation of the underlying principles of wind energy or a quick update. Its style and level will also appeal to second and third year undergraduate and postgraduate students of renewable and wind energy, energy systems and electrical/electronic engineering. It also gives a concise account of the technology for the large and growing number of people who are interested in onshore and offshore wind farms and the contribution they are making to carbon-free electricity generation in the 21st century.

Author : Maria Di Rosa
Publisher : Firenze University Press
Page : 224 pages
File Size : 44,6 Mb
Release : 2022
Category : Science
ISBN : 9788855184199

Get Book

Tectono-metamorphic evolution of the continental units along the edge between Alpine and Hercynian Corsica by Maria Di Rosa Pdf

In this work the central area of Corsica island was studied in order to reconstruct the tectono-metamorphic history of the continental and oceanic high pressure units that occupy the structurally deeper levels of the tectonic stacking of Alpine Corsica and their stratigraphic and structural relationship with the European margin (Hercynian Corsica). The study includes the geological mapping, the mesoscale and microscale structural analysis, the acquisition of chemical analyzes and micromaps with the microprobe, thermobarometric estimation through specific methodologies for metapelites, U-Th-Pb dating of zircons and allanites. The results obtained allows to reconstruct the geodynamic model of this sector of the Alpine belt from the Permian to the Burdigalian.

Author : Laura Colzi
Publisher : Firenze University Press
Page : 232 pages
File Size : 44,8 Mb
Release : 2022
Category : Science
ISBN : 9788855183796

Get Book

Isotopic fractionation study towards massive star-forming regions across the Galaxy by Laura Colzi Pdf

One of the most important tools to investigate the chemical history of our Galaxy and our own Solar System is to measure the isotopic fractionation of chemical elements. In the present study new astronomical observations devoted to the study of hydrogen and nitrogen fractionation (D/H and 14N/15N ratios) of molecules, towards massive star-forming regions in different evolutionary phases, have been presented. Moreover, a new detailed theoretical study of carbon fractionation, 12C/13C ratios, has been done. One of the main results was the confirmation that the 14N/15N ratio increases with the galactocentric distance, as predicted by stellar nucleosynthesis Galactic chemical evolution models. This work gives new important inputs on the understanding of local chemical processes that favor the production of molecules with different isotopes in star-forming regions.

Author : Raffaella Valenti
Publisher : Firenze University Press
Page : 184 pages
File Size : 42,9 Mb
Release : 2018
Category : Electronic
ISBN : 9788864537788

Get Book

Cerebral Small Vessel Disease and Cerebral Amyloid Angiopathy by Raffaella Valenti Pdf

Author : Dalila De Vita
Publisher : Firenze University Press
Page : 68 pages
File Size : 47,8 Mb
Release : 2022
Category : Medical
ISBN : 9788855183437

Get Book

Functional validation of genetic variants identified by next generation sequencing in malformations of cortical development by Dalila De Vita Pdf

Malformations of cortical development (MCDs) result from a disruption in the process of the human brain cortex formation: currently, there are no pharmacological treatments for diffuse MCDs. Next-generation sequencing has accelerated the identification of MCDs causing genes: in some cases, functional studies are needed to clarify the role of genetic variants. The aim of this PhD project has been to apply a multidisciplinary approach to identify causative mutations in patients with MCDs, validate the pathogenic role of the identified mutations, and assess the effectiveness of novel in vitro treatment for mTOR pathway related MCDs.

Author : Marco Fondi
Publisher : Firenze University Press
Page : 82 pages
File Size : 45,7 Mb
Release : 2011
Category : Medical
ISBN : 9788866550433

Get Book

Bioinformatics of Genome Evolution: from Ancestral to Modern Metabolism Phylogenomics and Comparative Genomics to Understand Microbial Evolution by Marco Fondi Pdf

Bioinformatics, that is the interdisciplinary field that blends computer science and biostatistics with biological and biomedical sciences, is expected to gain a central role in next feature. Indeed, it has now affected several fields of biology, providing crucial hints for the understanding of biological systems and also allowing a more accurate design of wet lab experiments. In this work, the analysis of sequence data has be used in different fields, such as evolution (e.g. the assembly and evolution of metabolism), infections control (e.g. the horizontal flow of antibiotic resistance), ecology (bacterial bioremediation).