A Comparison Of Methods For Computation Of Wave Forcing
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Comparison Of Methods For The Computation Of Wave Forcing
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Author : Olga Glöckner
language : en
Publisher:
Release Date : 2018
Comparison Of Methods For The Computation Of Wave Forcing written by Olga Glöckner and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018 with categories.
A Comparison Of Methods For Computation Of Wave Forcing
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Author : Olga Glöckner
language : en
Publisher: GRIN Verlag
Release Date : 2018-05-17
A Comparison Of Methods For Computation Of Wave Forcing written by Olga Glöckner and has been published by GRIN Verlag this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-05-17 with Technology & Engineering categories.
Diploma Thesis from the year 2014 in the subject Engineering - Civil Engineering, grade: 1,0, University of Hannover (A&M University Texas, Ludwig-Franzius-Institut für Wasserbau, Ästuar- und Küsteningenieurwesen), language: English, abstract: Unlike fossil fuels (for example oil, coal and natural gas), wind energy is a renewable energy resource. Since winds at sea are stronger and more consistent than onshore winds, the demand for offshore wind turbines has increased over the last years. As energy can be produced more efficient in deeper water, several floating offshore wind turbine constructions, such as the OC3 Hywind spar-buoy, have been proposed. The design of floating wind turbines depends on the simulation of the system behavior caused by exciting forces. This thesis deals with the comparison between different methods for calculating wave forces and resulting platform motions of a floating offshore wind turbine. On the one hand, wave exciting loads computed with Morison’s equation are compared to the hydrodynamic forces simulated by the open source code FAST on the basis of the diffraction theory. On the other hand, response motions of the floating structure are simulated by the commercial offshore software SESAM in the frequency domain and compared with the motions calculated by FAST in the time domain.
Wind Energy Methods For Computation Of Wave Forcing And The Resulting Motion Of A Slender Offshore Floating Structure
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Author : Olga Glöckner
language : en
Publisher: GRIN Verlag
Release Date : 2018-07-19
Wind Energy Methods For Computation Of Wave Forcing And The Resulting Motion Of A Slender Offshore Floating Structure written by Olga Glöckner and has been published by GRIN Verlag this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-07-19 with Technology & Engineering categories.
Academic Paper from the year 2014 in the subject Engineering - Civil Engineering, grade: 1,0, University of Hannover (A&M University Texas, Ludwig-Franzius-Institut für Wasserbau, Ästuar- und Küsteningenieurwesen), language: English, abstract: This thesis investigates how wave loads act on an OC3 Hywind spar-buoy. The author analyzes the resulting motions of the support platform. This work also contains a detailed presentation of the topic with useful additional information and graphics. Unlike fossil fuels (like oil, coal and natural gas), wind energy is a renewable energy resource. Since winds at sea are stronger and more consistent than onshore winds, the demand for offshore wind turbines has increased over the last years. As energy can be produced more efficient in deeper water, several floating offshore wind turbine constructions, such as the OC3 Hywind spar-buoy, have been proposed. The design of floating wind turbines depends on the simulation of the system behavior caused by exciting forces. A general overview of regular and irregular waves as well as hydrostatic and hydrodynamic loads acting on floating structures is given in chapter 2. Furthermore, essential formulations for calculating motions of FOWTs are given at the end of this chapter. Since all simulations carried out in this thesis are based on the OC3 Hywind concept, detailed information about this floating wind turbine model are given in chapter 3. Three different methods are used for the estimation of wave induced loads and motions. Section 4 describes a modified Morison formulation in the time domain which is applied by the commercially available software MATLAB. On the basis of the diffraction theory the commercial offshore software package SESAM simulates wave excitation forces and responding motions which are presented and discussed in chapter 5. The third method is the open source code FAST that computes wave induced loads and motions based on the first-order potential theory and Kane’s equation of motion. Basic formulations used in FAST and essential hydrodynamic results are shown in chapter 6. The comparisons between the simulations of the three programs are represented and the individual results are analyzed in chapter 7.
Wave Force And Structure Response
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Author : Marc Henry Rolfes
language : en
Publisher:
Release Date : 1980
Wave Force And Structure Response written by Marc Henry Rolfes and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1980 with Ocean waves categories.
An 18 foot tall jacket type structure was tested for three dimensional forces and deck deflections using regular and irregular waves of up to 2.5 feet in height. Theoretical studies for both regular and irregular wave forces are presented in conjunction with experimental results. In addition, a similar comparison for deck deflection and frequency response is presented in this report. Results indicate base shear, lift force, and overturning moment calculations using the range of hydrodynamic coefficients recommended by the American Petroleum Institute are in general agreement with experimentally determined values for wave frequencies between 0.3 and 0.8 Hz. Deck deflection measurements were significantly greater than those calculated using standard structural matrix techniques. The difference is concluded to be the result of inadequate analytical description of the test structure joints using a rigid joint analysis. (Author).
Asian And Pacific Coasts 2011
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Author : Joseph Hun-Wei Lee
language : en
Publisher: World Scientific
Release Date : 2011-11-24
Asian And Pacific Coasts 2011 written by Joseph Hun-Wei Lee and has been published by World Scientific this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011-11-24 with Technology & Engineering categories.
This is a compilation of papers presented at the 6th International Conference on Asian and Pacific Coasts (APAC2011) held on December 14?16, 2011 in Hong Kong, China. It contains more than 200 articles addressing a wide spectrum of issues, ranging from conventional coastal engineering problems (such as wave hydrodynamics and sediment transport) to issues of contemporary interest (such as tsunami, coastal development, climate change and seawater level rise, shoreline protection, marine energy, nearshore ecology, oil spill, etc.). Authors present their experiences in tackling these problems, by means of theoretical modeling, numerical simulation, laboratory and field observations, with an aim to advance fundamental understanding of the controlling mechanisms, as well as to develop solutions for practical designs. This volume serves to promote technological progress and activities, technical knowledge transfer and cooperation on an international scale. Contents:Beach Erosion and Sediment TransportClimate Change and Sea Level RiseCoastal Infrastructure DevelopmentsHydrodynamics of Offshore StructuresLowland Development and ReclamationMarine Ecology and EnvironmentsMarine and Offshore Wind EnergyOil Spill and Environmental HazardsPort Works (Dredging, Seawall Design, etc.)Sea Water IntrusionTsunami, Waves and TidesWastewater DisposalWetlands Readership: Scientists, engineers, researchers, and management professionals in the fields of coastal, ocean, port and marine engineering. Keywords:Coastal Engineering;Tsunami;Waves;Hydrodynamics;Marine Energy;Wetlands
Preprints Offshore Technology Conference
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Author :
language : en
Publisher:
Release Date : 1974
Preprints Offshore Technology Conference written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1974 with Marine resources categories.
Numerical Modelling Of Wave Energy Converters
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Author : Matt Folley
language : en
Publisher: Academic Press
Release Date : 2016-06-14
Numerical Modelling Of Wave Energy Converters written by Matt Folley and has been published by Academic Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-06-14 with Computers categories.
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. 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
Application Of Stress Wave Theory To Piles Quality Assurance On Land And Offshore Piling
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Author : J. Beim
language : en
Publisher: CRC Press
Release Date : 2000-01-01
Application Of Stress Wave Theory To Piles Quality Assurance On Land And Offshore Piling written by J. Beim and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000-01-01 with Technology & Engineering categories.
This work collates the topics discussed in the sixth International Conference on land and offshore piling. It covers topics such as: wave mechanics and its application to pile mechanics; driving equipment and developments; and pile integrity and low strain dynamic testing.
Proceedings Of All India Seminar On Advances In Product Development Apd 2006
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Author : R.K. Srivastava
language : en
Publisher: New Age International
Release Date : 2006
Proceedings Of All India Seminar On Advances In Product Development Apd 2006 written by R.K. Srivastava and has been published by New Age International this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006 with Commercial products categories.
Papers presented at an All India Seminar on Advances in Product Development, 17-18 February 2006.
Force Moment And Flow Field Characteristics Of Two Wing Body Nacelle Combinations At Mach Numbers 2 And 3
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Author : Hill, Jr. (William A.)
language : en
Publisher:
Release Date : 1960
Force Moment And Flow Field Characteristics Of Two Wing Body Nacelle Combinations At Mach Numbers 2 And 3 written by Hill, Jr. (William A.) and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1960 with Aerodynamic measurements categories.