Download or read book A Rational Strip Theory of Ship Motions written by T. Francis Ogilvie and published by . This book was released on 1969 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt: The exact ideal-fluid boundary-value problem is formulated for a ship forced to heave and pitch sinusoidally in otherwise calm water. This problem is then simplified by applying three restrictions: (1) the body must be slender; (2) the motions must be small in amplitude compared with ship beam or draft; (3) the frequency of oscillation must be high. The hydrodynamic problem is then recast as a singular perturbation problem which is solved by the method of matched asymptotic expansions. Formulas are derived for the hydrodynamic heave force and pitch moment, from which added-mass and damping coefficients can be easily obtained. The latter are similar but not identical to those used in several other versions of 'strip theory;' in particular, the forward-speed effects have the symmetry required by the theorem of Timman and Newman, a result which has not been realized in previous versions of strip theory. In order to calculate the coefficients by the formulas derived, it is necessary to solve numerically a set of boundary-value problems in two dimensions, namely, the problem of a cylinder oscillating vertically in the free surface. At least two practical procedures are available for this purpose. (Author).

Download or read book A Rational Strip Theory of Ship Motions written by Odd Magnus Faltinsen and published by . This book was released on 1971 with total page 147 pages. Available in PDF, EPUB and Kindle. Book excerpt: The exact ideal-fluid boundary-value problem is formulated for the diffraction of head-sea regular waves by a restrained ship. The problem is then simplified by applying four restrictions. The problem is solved by using matched asymptotic expansions. The result shows that the wave is attenuated as it propagates along the ship. The result is not expected to be valid near the bow or stern of the ship. The pressure distribution and force distribution along a ship model with circular cross-sections were calculated. The total force on the ship was compared with the value predicted by the Khaskind relation. The agreement is good. The experimental and theoretical pressure distribution along a prolate spheroid was compared. The predicted attenuation of the peak pressure is very well confirmed by the experiments. In addition, theory and experiment agree that the peak pressure near the ship generally leads the Froude-Kriloff pressure peak by 45 degrees. (Author).

Download or read book A Rational Strip Theory of Ship Motions written by T. Francis Ogilvie and published by . This book was released on 1969 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Rational Strip Theory of Ship Motions written by Odd Magnus Faltinsen and published by . This book was released on 1971 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Recent Developments and Applications of the Strip Theory to Calculate Ship Motions written by J. Gerritsma and published by . This book was released on 1974 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Analysis of the Modified Strip Theory for the Calculation of Ship Motions and Wave Bending Moments written by J. Gerritsma and published by . This book was released on 1967 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book An Improved Strip Theory Program for Ship Motions and Sea Loads in Waves written by and published by . This book was released on 1997 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: Describes enhancements to the strip theory program SHIPMO, with the goal of producing a robust code for predicting both ship motions and sea loads in waves. A new boundary element method was introduced which eliminates irregular frequencies of sectional hydrodynamic coefficients. Problems with predictions at low encounter frequencies are circumvented with a new extrapolation scheme. These improvements remove two sources of potentially large errors for predicted motions and sea loads. A new added resistance capability uses two different near-field methods for short and long wavelength regimes. Motion and sea load predictions include appendage and viscous forces for the lateral plane. Validation results for a warship are presented showing degree of agreement of predicted motions and sea loads with experiments.

Download or read book Time domain non linear strip theory for ship motions written by Yun Tao Fan and published by . This book was released on 2004 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ship Motions and Drag Reduction written by Johannes Krzywinski Lunde and published by . This book was released on 1966 with total page 1182 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book SHIPMO7 an Updated Strip Theory Program for Predicting Ship Motions and Sea Loads in Waves written by Kevin A. McTaggart and published by Dartmouth, N.S. : Defence Research Establishment Atlantic. This book was released on 1997 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Calculations of Struck ship Motions by Using the Cummins Equations with Strip Theory Potential Coefficients written by and published by . This book was released on 1993 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Validation of a Strip Theory Based Ship Motion Prediction Program written by Kadir Sariöz and published by . This book was released on 2000 with total page 51 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book SHIPMO6 an Updated Strip Theory Ship Motion Program written by Kevin A. McTaggart and published by Dartmouth, N.S. : Defence Research Establishment Atlantic. This book was released on 1993 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Marine Hydrodynamics 40th anniversary edition written by J. N. Newman and published by MIT Press. This book was released on 2018-01-26 with total page 450 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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

Download or read book Practical Design of Ships and Other Floating Structures written by Tetsuo Okada and published by Springer Nature. This book was released on 2020-10-05 with total page 1072 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book gathers the peer-reviewed proceedings of the 14th International Symposium, PRADS 2019, held in Yokohama, Japan, in September 2019. It brings together naval architects, engineers, academic researchers and professionals who are involved in ships and other floating structures to share the latest research advances in the field. The contents cover a broad range of topics, including design synthesis for ships and floating systems, production, hydrodynamics, and structures and materials. Reflecting the latest advances, the book will be of interest to researchers and practitioners alike.

Download or read book An Application of the Strip Theory to Nonlinear Motions of Ships in Regular Waves written by Weiguang Bao and published by . This book was released on 1986 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Unified Theory of Ship Motions written by J. Nicholas Newman and published by . This book was released on 1980 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: A linear theory is presented for the heave and pitch motions of a slender ship, moving with forward velocity in calm water. The velocity potential includes a particular solution similar to that of the high-frequency strip theory, plus a homogeneous component which accounts for interactions along the length in an analogous manner to the low-frequency 'ordinary' slender body theory. The resulting 'unified' theory is valid more generally for all frequencies of practical importance. Computations are presented for the added-mass and damping coefficients of a floating spheroid, a Series 60 hull, and a frigate. Comparisons with experimental data and with zero-speed exact theories confirm the utility of the unified theory. This theory can be used to analyse the performance of elongated wave-energy absorbers. This application is illustrated for a hinged 'Cockerell' raft.