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Author : Christopher Edwin Blenkinsopp
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (18 download)
Download or read book Air Entrainment, Splash and Energy Dissipation in Breaking Waves written by Christopher Edwin Blenkinsopp and published by . This book was released on 2007 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Peter Jesse Sutherland
Publisher :
ISBN 13 : 9781303566660
Total Pages : 117 pages
Book Rating : 4.5/5 (666 download)
Download or read book On Breaking Waves and Turbulence at the Air-sea Interface written by Peter Jesse Sutherland and published by . This book was released on 2013 with total page 117 pages. Available in PDF, EPUB and Kindle. Book excerpt: Wave fields in the open ocean evolve according to the radiative transfer equation of wave energy or action, which has three source terms, wind input, non-linear wave-wave interactions, and dissipation. Of these, dissipation is thought to be the least well understood, but is expected to be dominated by wave breaking. This dissertation is an investigation of the physical processes associated with the wave breaking and dissipation. Data were taken during three field experiments on R/P FLIP. These experiments took place in September 2009 south of Hawaii (Radiance in a Dynamic Ocean experiment), off the coast of Northern California in June of 2010 (High Resolution Air-Sea Interaction experiment, HIRES), and in the Southern California bight in December 2010 (an extension of HIRES). Between the three campaigns, winds of 0 to 18 m/s and significant wave heights of 0.5 to 5 m were experienced. Stereo Long Wave Infra Red (LWIR) video cameras mounted on one of FLIP's booms were used to reconstruct the 3D structure of an approximately 3x4 m patch of sea surface. Using surface temperature structure as a passive tracer, pattern imaging velocimetry (PIV) was applied to consecutive video frames to extract the velocity field of this patch. An important statistic of breakers is [Lambda](c), the distribution of crest length per unit area of sea surface as a function of breaker velocity c. A new technique, based on image texture, was developed to track breaking waves on the stereo IR reconstructed surface. These waves ranged from large air-entraining breakers to micro breakers that would be undetectable in visible imagery. This allowed measurements of [Lambda](c) that also cover the high-wavenumber gravity wave spectrum. Stress (or wave momentum flux) and dissipation can be related to the fourth and fifth moments of [Lambda](c), and comparisons of these moments with wind stress and wave field dissipation showed that micro-breaking without air entrainment is dynamically significant. A new technique was developed, whereby irrotational surface waves can be separated from rotational turbulence using a Helmholtz decomposition. Turbulent kinetic energy (TKE) dissipation at the sea surface was then estimated using this rotational velocity field. Synchronized subsurface velocity measurements from an array of profiling pulse-coherent acoustic Doppler profilers allowed the calculation of the dissipation profile to depths O(10) significant wave heights. Tying surface and subsurface measurements together allows estimation of total TKE dissipation in the surface wave zone of the marine boundary layer. Turbulence measurements were supported by wind and wave data, allowing us to measure the wave coherence of TKE dissipation and relate it to wind and wave conditions, especially wave breaking.
Author :
Publisher :
ISBN 13 :
Total Pages : 696 pages
Book Rating : 4.8/5 (156 download)
Download or read book Proceedings written by and published by . This book was released on 2007 with total page 696 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : David M Kelly
Publisher : CRC Press
ISBN 13 : 1351119524
Total Pages : 376 pages
Book Rating : 4.3/5 (511 download)
Download or read book Advanced Numerical Modelling of Wave Structure Interaction written by David M Kelly and published by CRC Press. This book was released on 2021-04-06 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book will serve as a reference guide, and state-of-the-art review, for the wide spectrum of numerical models and computational techniques available to solve some of the most challenging problems in coastal engineering. The topics covered in this book, are explained fundamentally from a numerical perspective and also include practical examples applications. Important classic themes such as wave generation, propagation and breaking, turbulence modelling and sediment transport are complemented by hot topics such as fluid and structure interaction or multi-body interaction to provide an integral overview on numerical techniques for coastal engineering. Through the vision of 10 high impact authors, each an expert in one or more of the fields included in this work, the chapters offer a broad perspective providing several different approaches, which the readers can compare critically to select the most suitable for their needs. Advanced Numerical Modelling of Wave Structure Interaction will be useful for a wide audience, including PhD students, research scientists, numerical model developers and coastal engineering consultants alike.
Author : Xiaohui Zhou
Publisher :
ISBN 13 :
Total Pages : 183 pages
Book Rating : 4.:/5 (437 download)
Download or read book Effects of Reflected Waves on Energy Dissipation in Breaking Waves written by Xiaohui Zhou and published by . This book was released on 1999 with total page 183 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Qingwei Ma
Publisher : World Scientific
ISBN 13 : 9812836497
Total Pages : 700 pages
Book Rating : 4.8/5 (128 download)
Download or read book Advances in Numerical Simulation of Nonlinear Water Waves written by Qingwei Ma and published by World Scientific. This book was released on 2010 with total page 700 pages. Available in PDF, EPUB and Kindle. Book excerpt: Deals with numerical methods that have been employed to simulate nonlinear water waves. This book covers important applications, such as overturning waves, breaking waves, waves generated by landslides, freak waves, solitary waves, tsunamis, sloshing waves, interaction of extreme waves with beaches, and interaction with fixed structures.
Author : Marianna Braza
Publisher : Springer Nature
ISBN 13 : 3030555941
Total Pages : 599 pages
Book Rating : 4.0/5 (35 download)
Download or read book Advances in Critical Flow Dynamics Involving Moving/Deformable Structures with Design Applications written by Marianna Braza and published by Springer Nature. This book was released on 2021-02-10 with total page 599 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book reports on the latest knowledge concerning critical phenomena arising in fluid-structure interaction due to movement and/or deformation of bodies. The focus of the book is on reporting progress in understanding turbulence and flow control to improve aerodynamic / hydrodynamic performance by reducing drag, increasing lift or thrust and reducing noise under critical conditions that may result in massive separation, strong vortex dynamics, amplification of harmful instabilities (flutter, buffet), and flow -induced vibrations. Theory together with large-scale simulations and experiments have revealed new features of turbulent flow in the boundary layer over bodies and in thin shear layers immediately downstream of separation. New insights into turbulent flow interacting with actively deformable structures, leading to new ways of adapting and controlling the body shape and vibrations to respond to these critical conditions, are investigated. The book covers new features of turbulent flows in boundary layers over wings and in shear layers immediately downstream: studies of natural and artificially generated fluctuations; reduction of noise and drag; and electromechanical conversion topics. Smart actuators as well as how smart designs lead to considerable benefits compared with conventional methods are also extensively discussed. Based on contributions presented at the IUTAM Symposium “Critical Flow Dynamics involving Moving/Deformable Structures with Design applications”, held in June 18-22, 2018, in Santorini, Greece, the book provides readers with extensive information about current theories, methods and challenges in flow and turbulence control, and practical knowledge about how to use this information together with smart and bio-inspired design tools to improve aerodynamic and hydrodynamic design and safety.
Author : Nguyen Trung Viet
Publisher : Springer Nature
ISBN 13 : 9811502919
Total Pages : 1483 pages
Book Rating : 4.8/5 (115 download)
Download or read book APAC 2019 written by Nguyen Trung Viet and published by Springer Nature. This book was released on 2019-09-25 with total page 1483 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents selected articles from the International Conference on Asian and Pacific Coasts (APAC 2019), an event intended to promote academic and technical exchange on coastal related studies, including coastal engineering and coastal environmental problems, among Asian and Pacific countries/regions. APAC is jointly supported by the Chinese Ocean Engineering Society (COES), the Coastal Engineering Committee of the Japan Society of Civil Engineers (JSCE), and the Korean Society of Coastal and Ocean Engineers (KSCOE). APAC is jointly supported by the Chinese Ocean Engineering Society (COES), the Coastal Engineering Committee of the Japan Society of Civil Engineers (JSCE), and the Korean Society of Coastal and Ocean Engineers (KSCOE).
Author :
Publisher : Academic Press
ISBN 13 : 0123757215
Total Pages : 658 pages
Book Rating : 4.1/5 (237 download)
Download or read book Elements of Physical Oceanography written by and published by Academic Press. This book was released on 2009-08-26 with total page 658 pages. Available in PDF, EPUB and Kindle. Book excerpt: Elements of Physical Oceanography is a derivative of the Encyclopedia of Ocean Sciences, Second Edition and serves as an important reference on current physical oceanography knowledge and expertise in one convenient and accessible source. Its selection of articles—all written by experts in their field—focuses on ocean physics, air-sea transfers, waves, mixing, ice, and the processes of transfer of properties such as heat, salinity, momentum and dissolved gases, within and into the ocean. Elements of Physical Oceanography serves as an ideal reference for topical research. References related articles in physical oceanography to facilitate further research Richly illustrated with figures and tables that aid in understanding key concepts Includes an introductory overview and then explores each topic in detail, making it useful to experts and graduate-level researchers Topical arrangement makes it the perfect desk reference
Author : Alexander Babanin
Publisher : Cambridge University Press
ISBN 13 : 1139502727
Total Pages : 479 pages
Book Rating : 4.1/5 (395 download)
Download or read book Breaking and Dissipation of Ocean Surface Waves written by Alexander Babanin and published by Cambridge University Press. This book was released on 2011-05-19 with total page 479 pages. Available in PDF, EPUB and Kindle. Book excerpt: Wave breaking represents one of the most interesting and challenging problems for fluid mechanics and physical oceanography. Over the last fifteen years our understanding has undergone a dramatic leap forward, and wave breaking has emerged as a process whose physics is clarified and quantified. Ocean wave breaking plays the primary role in the air-sea exchange of momentum, mass and heat, and it is of significant importance for ocean remote sensing, coastal and ocean engineering, navigation and other practical applications. This book outlines the state of the art in our understanding of wave breaking and presents the main outstanding problems. It is a valuable resource for anyone interested in this topic, including researchers, modellers, forecasters, engineers and graduate students in physical oceanography, meteorology and ocean engineering.
Author : Qingwei Ma
Publisher : World Scientific
ISBN 13 : 9812836500
Total Pages : 700 pages
Book Rating : 4.8/5 (128 download)
Download or read book Advances in Numerical Simulation of Nonlinear Water Waves written by Qingwei Ma and published by World Scientific. This book was released on 2010 with total page 700 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ch. 1. Model for fully nonlinear ocean wave simulations derived using Fourier inversion of integral equations in 3D / J. Grue and D. Fructus -- ch. 2. Two-dimensional direct numerical simulations of the dynamics of rogue waves under wind action / J. Touboul and C. Kharif -- ch. 3. Progress in fully nonlinear potential flow modeling of 3D extreme ocean waves / S.T. Grilli [und weitere] -- ch. 4. Time domain simulation of nonlinear water waves using spectral methods / F. Bonnefoy [und weitere] -- ch. 5. QALE-FEM method and its application to the simulation of free-responses of floating bodies and overturning waves / Q.W. Ma and S. Yan -- ch. 6. Velocity calculation methods in finite element based MEL formulation / V. Sriram, S.A. Sannasiraj and V. Sundar -- ch. 7. High-order Boussinesq-type modelling of nonlinear wave phenomena in deep and shallow water / P.A. Madsen and D.R. Fuhrman -- ch. 8. Inter-comparisons of different forms of higher-order Boussinesq equations / Z.L. Zou, K.Z. Fang and Z.B. Liu -- ch. 9. Method of fundamental solutions for fully nonlinear water waves / D.-L. Young, N.-J. Wu and T.-K. Tsay -- ch. 10. Application of the finite volume method to the simulation of nonlinear water waves / D. Greaves -- ch. 11. Developments in multi-fluid finite volume free surface capturing method / D.M. Causon, C.G. Mingham and L. Qian -- ch. 12. Numerical computation methods for strongly nonlinear wave-body interactions / M. Kashiwagi, C. Hu and M. Sueyoshi -- ch. 13. Smoothed particle hydrodynamics for water waves / R.A. Dalrymple [und weitere] -- ch. 14. Modelling nonlinear water waves with RANS and LES SPH models / R. Issa [und weitere] -- ch. 15. MLPG_R method and Its application to various nonlinear water waves / Q.W. Ma -- ch. 16. Large Eddy simulation of the hydrodynamics generated by breaking waves / P. Lubin and J.-P. Caltagirone -- ch. 17. Recent advances in turbulence modeling for unsteady breaking waves / Q. Zhao and S.W. Armfield -- ch. 18. Freak waves and their interaction with ships and offshore structures / G.F. Clauss
Author : E.C. Monahan
Publisher : Springer Science & Business Media
ISBN 13 : 9789027722515
Total Pages : 316 pages
Book Rating : 4.7/5 (225 download)
Download or read book Oceanic Whitecaps written by E.C. Monahan and published by Springer Science & Business Media. This book was released on 1986-04-30 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt: While various volumes havepreviously been de bable, answer to this question lies in the obser vation that while whitecaps are some of the voted to such topics as droplets and bubbles, it is our conceit that this is the first volume dedi most apparent features associated with high sea cated to the description of the phenomenon states, they have also pro\'ed to be someofthe of oceanic whitecapping, and to a considera most difficult objects to measure and describe tion of the role these whitecapsplay in satellite quantitatively, and while scientists as a group marine remote sensing, in sea-salt aerosol gene may like to tackle difficult problems, we ration, and in a broad range ofother sea surface should not be accused ofundue modesty when processes. This observation, reOecting in part we observe that as a group we also have a finite the relatively modest attention paid until re tolerance for frustration and ahuman,perhaps cently by the scientific community to white aesthetic, prejudice in favour ofnatural pheno caps, is noteworthy when one considers that mena that are amcnable to detailed description. collectively whitecaps are to thegeneral public It is appropriate to note that Professor Wood one of the most striking features of the sea cock, to whom this volume is dedicated, ap scape.
Author : Jurjen Anno Battjes
Publisher :
ISBN 13 :
Total Pages : 46 pages
Book Rating : 4.3/5 (121 download)
Download or read book Energy Dissipation in Breaking Solitary and Periodic Waves written by Jurjen Anno Battjes and published by . This book was released on 1986 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Jessica M. Kleiss
Publisher :
ISBN 13 :
Total Pages : 190 pages
Book Rating : 4.:/5 (429 download)
Download or read book Airborne Observations of the Kinematics and Statistics of Breaking Waves written by Jessica M. Kleiss and published by . This book was released on 2009 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt: Breaking waves play an important role in air-sea interaction : enhancing momentum flux from the atmosphere to the ocean, dissipating wave energy that is then available for turbulent mixing, injecting aerosols and sea spray into the atmosphere, and affecting air-sea gas transfer due to air entrainment. In this thesis observations are presented of the occurrence of breaking waves under conditions of strong winds (10-25ms−1) and fetch-limited seas (0-500km) in the Gulf of Tehuantepec Experiment in 2004. An airborne nadir-looking video camera, along with a global positioning system (GPS) and inertial motion unit (IMU), provided digital videos of the breaking sea surface in an earth frame. In particular, we present observations of [Lambda] (c)dc, which is the distribution of breaking wave crest lengths per unit sea surface area, binned by breaking velocity increments dc. Methods of analyzing visible images of the sea surface to yield [Lambda](c) are studied. The results from previous field observations of [Lambda](c) give qualitatively different results : Melville and Matusov (2002) find an exponential form for [Lambda](c), while Gemmrich et al. (2008) obtain a function that peaks at intermediate speeds and falls of for high and low speeds, and at higher speeds is up to an order of magnitude higher than Melville and Matusov (2002). Two independent processing techniques for determining [Lambda](c) from video images are implemented, and it is shown that the results from both studies can qualitatively be obtained when the assumptions built into the processing of the previous studies are used. The effects of surface currents, long wave orbital velocity, and the relationship between the speed of the foam patch and the underlying intrinsic phase speed are addressed. The appropriateness and limitations of comparison of the first moment of [Lambda](c) to the breaking rate are explored. The spectrally resolved [Lambda](c) as well as bulk measurements of whitecap coverage and breaking rate are presented for a range of wind speeds and sea states. Observations are compared to Phillips' (1985) model of [Lambda](c) in the equilibrium range of the wave spectrum. The observed [Lambda](c) distributions are described well by the Rayleigh distribution for slow and intermediate speeds, yet fall above the Rayleigh distribution for the fastest breaking speeds. The dimensionless width of the [Lambda](c) distribution increases weakly with dimensionless fetch, while the total length of breaking per unit sea surface area decreases with dimensionless fetch for intermediate to fully-developed seas. The integral and the first two moments of [Lambda](c) show a strong correlation with the active whitecap coverage and active breaking rate. The active whitecap coverage falls in the range of previous observations, but with a stronger dependence on wind speed. The breaking rate plotted against the spectral peak steepness is in agreement with previous observations (Banner et al., 2000).
Author : Jane Mckee Smith
Publisher : World Scientific
ISBN 13 : 9814480525
Total Pages : 4836 pages
Book Rating : 4.8/5 (144 download)
Download or read book Coastal Engineering 2004 - Proceedings Of The 29th International Conference (In 4 Vols) written by Jane Mckee Smith and published by World Scientific. This book was released on 2005-04-08 with total page 4836 pages. Available in PDF, EPUB and Kindle. Book excerpt: This comprehensive and up-to-date volume contains 367 papers presented at the 29th International Conference on Coastal Engineering, held in Lisbon, Portugal, 19-24 September 2004. It is divided into five parts: waves; long waves, nearshore currents, and swash; sediment transport and morphology; coastal management, beach nourishment, and dredging; coastal structures. The contributions cover a broad range of topics including theory, numerical and physical modeling, field measurements, case studies, design, and management. Coastal Engineering 2004 provides engineers, scientists, and planners state-of-the-art information on coastal engineering and coastal processes.The proceedings have been selected for coverage in:
Author : National Research Council
Publisher : National Academies Press
ISBN 13 : 0309058791
Total Pages : 1100 pages
Book Rating : 4.3/5 (9 download)
Download or read book Twenty-First Symposium on Naval Hydrodynamics written by National Research Council and published by National Academies Press. This book was released on 1997-09-11 with total page 1100 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Hubert Chanson
Publisher : CRC Press
ISBN 13 : 1315680297
Total Pages : 178 pages
Book Rating : 4.3/5 (156 download)
Download or read book Energy Dissipation in Hydraulic Structures written by Hubert Chanson and published by CRC Press. This book was released on 2015-05-12 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent advances in technology have permitted the construction of large dams, reservoirs and channels. This progress has necessitated the development of new design and construction techniques, particularly with the provision of adequate flood release facilities. Chutes and spillways are designed to spill large water discharges over a hydraulic struc
