Searched for: subject%3A%22wave%255C%2Bforces%22
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Leenders, Kevin (author)
With the pressing matter of climate change, the importance of renewable energy sources is increasing day by day. A large portion of this renewable energy is to be generated with the use of wind turbines, which are commonly located onshore. In recent decades, great effort has been put in the development to place these turbines offshore, because...
master thesis 2023
document
Mortimer, William (author), Calvert, R. (author), Antonini, A. (author), Greaves, Deborah (author), Raby, Alison (author), van den Bremer, T.S. (author)
Experiments are contaminated by second-order error waves at sub- and super-harmonic frequencies when first-order wave generation is used. Herein, we investigate by experiment the implications of second-order wave generation theory for dynamic wave force and run-up on a vertical wall in shallow to intermediate water depth (k<sub>0</sub>d=0.5−1...
journal article 2023
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Tuin, Henry (author), Voortman, Hessel (author), Hofland, B. (author), de Almeida Sousa, E. (author)
For the design of vertical hydraulic structures pulsating wave forces need to be calculated. The total wave force is a result of every wave component (long waves and short waves) within a wave field. The common formulae are derived for regular or unimodal narrow sea states and use one characteristic wave height and period. Broad-banded spectra...
journal article 2022
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Antonini, A. (author), William Brownjohn, James Mark (author), Dassanayake, Darshana (author), Raby, Alison (author), Bassit, James (author), Pappas, Athanasios (author), D'Ayala, Dina (author)
The measurement of wave forces acting on marine structures is a complicated task, both during physical experiments and, even more so, in the field. Force transducers adopted in laboratory experiments require a minimum level of structural movement, thus violating the main assumption of fully rigid structure and introducing a dynamic response...
journal article 2021
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Petersen, Øyvind Wiig (author), Øiseth, Ole (author), Lourens, E. (author)
The dynamic behaviour of long-span bridges is governed by stochastic loads from typically ambient excitation sources. In real life, these loads cannot be measured directly at full scale. However, inverse methods can be utilised to identify these unknown forces using response measurements together with a numerical model of the relevant...
journal article 2019
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Dassanayake, Darshana T. (author), Raby, Alison (author), Antonini, A. (author)
Estimation of impulsive wave loading on a cylinder upon a shoal, such as an offshore rock lighthouse constructed on a partially emerged offshore rock with a steep foreshore, poses a unique challenge to marine structural engineers. Large and small scale experimental investigations are the most feasible methods to study this phenomena. However,...
conference paper 2019
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Wang, Hanwei (author)
Moored vessels are subject to wave forces and moments at different frequencies, which induce motions of the body and can be transferred to the mooring lines and fenders. Under extreme forces and vessel motions, dangerous line breaking accidents can occur or the ship movements can be simply too large to continue the loading/unloading process,...
master thesis 2018
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Kamath, A.M. (author)
Non-breaking wave forces on a cylindrical pile are calculated numerically by solving the three-dimensional Navier Stokes equations in the numerical wave tank of REEF3D. Initially, the numerical wave tank is validated by comparison of the numerical results with the analytical solutions for varying grid density, time step size, numerical beach...
master thesis 2012
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Van Kessel, J.L.F. (author)
The increase of the global population and expanding coastal mega-cities will necessitate an innovative pursuit of the utilization of the ocean space in which mega-floaters will play an important role in the future. These types of structures are very large floating artificial islands that can be used for various facilities and purposes similar to...
doctoral thesis 2010
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Martin, F.L. (author)
This paper has two main objectives: (1) to describe the experimental work carried out in order to verify the theoretical method from Martin (1995) for the calculation of wave forces on crown walls and (2) to show some results from field and lab measurements and compare these data to calculations from several analytical methods. The Principe de...
report 1999
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Goda, Yoshimi (author)
HIstorical overview of the development of wave formulas used in coastal engineering.
report 1999
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Verweij, A.P. (author)
Vertical breakwaters are used in the design of harbours to create a protective area. This protective area can be an approach channel or the harbour itself. Because of large new projects, such as Maasvlakte 11 in the Netherlands and the increasing sizes of ships, many harbours have to be placed in deep water. Deep water requires higher...
master thesis 1997
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Vink, H.A.T. (author)
The need for coastal structures, such as breakwaters, at great water depths is rapidly increasing as a result ofthe increasing draught of large vessels and off-shore land reclamations which can, for instance, be used for the benefit of the expansion of harbours and related industrial activities. In water depths greater than approximately 10 m...
master thesis 1997
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Franco, L. (author)
Italy is often considered as a mother country of vertical breakwaters for harbour protection, since they have been widely used all along our coasts long since. An updated location map is given in fig. 1, which also shows the position of the directional wave recording stations of the existing Italian network. The most common vertical breakwaters...
report 1992
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Meermans, W. (author)
Voorbeeldberekening voor krachten op een monopile (bijv. fundering windgenerator) in offshore condities
report 1983
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Losada, M.A. (author), Giménez Curto, L.A. (author)
Research on rubble mound breakwaters when confronted with waves. The rapport covers the flow characteristics and mound stability under regular waves and under oblique wave attack. The authors find a formula for rough, permeable slopes, flow characteristics under the action of a regular wave train by a function of the type. Furthermore they...
report 1980
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Moutzouris, C. (author)
Experimental research to the influence of the air pressure on the impact pressure cause by breaking waves. The research shows that there are three factors which load the structure during the breaking of waves: the water layer over the structure, the shock due to the impact of the water jet from breaking and the air pocket entrapped in the water...
report 1979
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Versowsky, P.E. (author), Herbich, J.B. (author)
The results of a model study of the farces caused by oscillatory waves on large rectangular tank-like submerged objects are presented. Three phases of the problem were examined: 1) description of the forces in terms of dimensionless parameters, 2) description of the effect of large wave heights which are of importance to the designer, and 3) the...
report 1975
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Faltinsen, O.M. (author)
conference paper 1972
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Dietz, J. (author), van Staal, G. (author), Siefert, W. (author), Venis, W.A. (author)
For a safe and efficient dimensioning of the Eider Evacuation Sluices it was necessary to know the magnitude and probability of the occurring wave forces. To determine those data a model investigation has been carried out in one of the wind flumes of the Delft Hydraulics Laboratory in charge of and in co-operation with the Bundesanstalt fur...
conference paper 1969
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