Simulation Of Hydrodynamic Forces And Motions For A Freely Maneuvering Ship In A Seaway
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Simulation Of Hydrodynamic Forces And Motions For A Freely Maneuvering Ship In A Seaway
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Author : Kevin A. McTaggart
language : en
Publisher:
Release Date : 2005
Simulation Of Hydrodynamic Forces And Motions For A Freely Maneuvering Ship In A Seaway written by Kevin A. McTaggart and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005 with Ships categories.
Practical Ship Hydrodynamics
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Author : Volker Bertram
language : en
Publisher: Elsevier
Release Date : 2012
Practical Ship Hydrodynamics written by Volker Bertram and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012 with Science categories.
Practical Ship Hydrodynamics provides a comprehensive overview of hydrodynamic experimental and numerical methods for ship resistance and propulsion, maneuvering, seakeeping and vibration. Beginning with an overview of problems and approaches, including the basics of modeling and full scale testing, expert author Volker Bertram introduces the marine applications of computational fluid dynamics and boundary element methods. Expanded and updated, this new edition includes: Otherwise disparate information on the factors affecting ship hydrodynamics, combined to provide one practical, go-to resource. Full coverage of new developments in computational methods and model testing techniques relating to marine design and development. New chapters on hydrodynamic aspects of ship vibrations and hydrodynamic options for fuel efficiency, and increased coverage of simple design estimates of hydrodynamic quantities such as resistance and wake fraction. With a strong focus on essential background for real-life modeling, this book is an ideal reference for practicing naval architects and graduate students.
Time Domain Simulation Of Wave Induced Ship Motions By A Rankine Panel Method
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Author : Junshi Wang
language : en
Publisher:
Release Date : 2016
Time Domain Simulation Of Wave Induced Ship Motions By A Rankine Panel Method written by Junshi Wang and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016 with categories.
In this thesis, a numerical program has been developed to simulate the wave-induced ship motions in the time domain. Wave-body interactions have been studied for various ships and floating bodies through forced motion and free motion simulations in a wide range of wave frequencies. A three-dimensional Rankine panel method is applied to solve the boundary value problem for the wave-body interactions. The velocity potentials and normal velocities on the boundaries are obtained in the time domain by solving the mixed boundary integral equations in relation to the source and dipole distributions. The hydrodynamic forces are calculated by the integration of the instantaneous hydrodynamic pressures over the body surface. The equations of ship motion are solved simultaneously with the boundary value problem for each time step. The wave elevation is computed by applying the linear free surface conditions. A numerical damping zone is adopted to absorb the outgoing waves in order to satisfy the radiation condition for the truncated free surface. A numerical filter is applied on the free surface for the smoothing of the wave elevation. Good convergence has been reached for both forced motion simulations and free motion simulations. The computed added-mass and damping coefficients, wave exciting forces, and motion responses for ships and floating bodies are in good agreement with the numerical results from other programs and experimental data.
Longitudinal Hydrodynamic Forces In Ship Maneuvering Motions
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Author : Haruzo Eda
language : en
Publisher:
Release Date : 1986
Longitudinal Hydrodynamic Forces In Ship Maneuvering Motions written by Haruzo Eda and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1986 with Ship handling categories.
Twenty Second Symposium On Naval Hydrodynamics
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Author : National Research Council
language : en
Publisher: National Academies Press
Release Date : 2000-03-02
Twenty Second Symposium On Naval Hydrodynamics written by National Research Council and has been published by National Academies Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000-03-02 with Science categories.
The Twenty-Second Symposium on Naval Hydrodynamics was held in Washington, D.C., from August 9-14, 1998. It coincided with the 100th anniversary of the David Taylor Model Basin. This international symposium was organized jointly by the Office of Naval Research (Mechanics and Energy Conversion S&T Division), the National Research Council (Naval Studies Board), and the Naval Surface Warfare Center, Carderock Division (David Taylor Model Basin). This biennial symposium promotes the technical exchange of naval research developments of common interest to all the countries of the world. The forum encourages both formal and informal discussion of the presented papers, and the occasion provides an opportunity for direct communication between international peers.
Mathematical Modeling Of Inland Vessel Maneuverability Considering Rudder Hydrodynamics
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Author : Jialun Liu
language : en
Publisher: Springer Nature
Release Date : 2020-05-11
Mathematical Modeling Of Inland Vessel Maneuverability Considering Rudder Hydrodynamics written by Jialun Liu and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-05-11 with Technology & Engineering categories.
This book demonstrates that different rudder configurations have different hydrodynamic characteristics, which are influenced by the profile, the parameters, and the specific configuration. The author proposes new regression formulas to help naval architects quickly estimate the rudder-induced forces and moments in maneuvering. Furthermore, the author proposes and validates an integrated maneuvering model for both seagoing ships and inland vessels. Using the proposed regression formulas and maneuvering model, the specific impacts of rudder configurations on inland vessel maneuverability are studied. In turn, the book demonstrates the application of Reynolds-Averaged Navier–Stokes (RANS) simulations to obtain rudder hydrodynamic characteristics, and the integration of the RANS results into maneuvering models as an accurate estimation of rudder forces and moments needed to quantify the impacts of rudder configurations on ships’ maneuvering performance. In addition, the author proposes new criteria for the prediction and evaluation of inland vessel maneuverability. Simulations of ships with various rudder configurations are presented, in order to analyze the impacts of rudder configurations on ship maneuverability in different classic and proposed test maneuvers. Offering essential guidance on the effects of rudders for inland vessel maneuverability, and helping practical engineers make informed design choices, the book is of interest to researchers and academics in the field of naval engineering, as well as students of naval architecture. Industrial practitioners working on ship design may also find it beneficial.
Simulation Of Ship Motions In A Seaway
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Author : Harald Böttcher
language : de
Publisher:
Release Date : 1989
Simulation Of Ship Motions In A Seaway written by Harald Böttcher and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1989 with categories.
Marine Hydrodynamics 40th Anniversary Edition
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Author : J. N. Newman
language : en
Publisher: MIT Press
Release Date : 2018-01-26
Marine Hydrodynamics 40th Anniversary Edition written by J. N. Newman and has been published by MIT Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-01-26 with Technology & Engineering categories.
A textbook that offers a unified treatment of the applications of hydrodynamics to marine problems. The applications of hydrodynamics to naval architecture and marine engineering expanded dramatically in the 1960s and 1970s. This classic textbook, originally published in 1977, filled the need for a single volume on the applications of hydrodynamics to marine problems. The book is solidly based on fundamentals, but it also guides the student to an understanding of engineering applications through its consideration of realistic configurations. The book takes a balanced approach between theory and empirics, providing the necessary theoretical background for an intelligent evaluation and application of empirical procedures. It also serves as an introduction to more specialized research methods. It unifies the seemingly diverse problems of marine hydrodynamics by examining them not as separate problems but as related applications of the general field of hydrodynamics. The book evolved from a first-year graduate course in MIT's Department of Ocean Engineering. A knowledge of advanced calculus is assumed. Students will find a previous introductory course in fluid dynamics helpful, but the book presents the necessary fundamentals in a self-contained manner. The 40th anniversary of this pioneering book offers a foreword by John Grue. Contents Model Testing • The Motion of a Viscous Fluid • The Motion of an Ideal Fluid • Lifting Surfaces • Waves and Wave Effects • Hydrodynamics of Slender Bodies
The Hydrodynamic Forces And Ship Motions In Waves
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Author : Jan Hendrik Vugts
language : en
Publisher:
Release Date : 1970
The Hydrodynamic Forces And Ship Motions In Waves written by Jan Hendrik Vugts and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1970 with Ocean waves categories.
Numerical Modeling Prediction Of Ship Maneuvering And Hydrodynamics During Inland Waterway Transport
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Author : Peng Du
language : en
Publisher: Nova Science Publishers
Release Date : 2022
Numerical Modeling Prediction Of Ship Maneuvering And Hydrodynamics During Inland Waterway Transport written by Peng Du and has been published by Nova Science Publishers this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022 with Technology & Engineering categories.
"In this work, ship hydrodynamics during inland waterway transport and ship maneuvering are investigated using CFD (Computational Fluid Dynamics) based on OpenFoam. Validation and verification studies are carried out for the mesh convergence, time step convergence, sensitivity to turbulence models and dynamic mesh techniques. A quaternion-based 6DoF motion solver is implemented for the trim and sinkage predictions. Environmental effects on several inland vessels (convoy 1, convoy 2, tanker) are studied using the validated numerical models. Three important aspects, the confinement effect of the waterway, head-on encounter, and ship-bridge pile interaction are simulated. The testing conditions cover a wide range, including various channel dimensions, water depths, ship draughts and speeds. The ship resistance, wave pattern, Kelvin angle and wave elevation at specific positions are investigated as functions of these parameters. Ship maneuvering is investigated using virtual captive model tests based on the MMG (Mathematical Maneuvering Group) model. An actuator disk is implemented to replace the real propeller. Open water test, rudder force test, OTT (Oblique Towing Tank test) and CMT (Circular Motion Test) of a KVLCC2 model are carried out to obtain the hydrodynamic coefficients of the propeller, rudder and ship hull. Using the obtained coefficients, system-based maneuvering simulations are carried out and validated using the free running test data. These studies reproduce real ship tests and thus prove the validity of our numerical models. As a result, the numerical solver is promising in ship hydrodynamics and marine engineering simulations"--