Searched for: subject%3A%22longshore%255C%2Bcurrent%22
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Zhang, R. (author), Chen, Y. (author), Yao, P. (author), Stive, M.J.F. (author), Zeng, Jian (author)
Coastal permeable groins have been used to protect beaches from erosion for centuries. However, the hydraulic functioning of permeable groins has not been fully understood and their design heavily depends on engineering experiences. In this study, numerical experiments were executed to investigate the effects of layout configurations of a...
journal article 2023
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Zhang, R. (author)
Beach erosion, the loss of sand from a beach due to longshore and/or cross-shore sediment transport mechanisms, is a challenging problem. In order to stabilize the beach and to slow down the rate of beach erosion, the construction of hard hydraulic structures is a traditional option. Groins are one of the oldest man-made hydraulic structures...
doctoral thesis 2020
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Zhang, R. (author), Stive, M.J.F. (author)
This paper focuses on a specific form of groins, Permeable Pile Groins (PPGs), consisting of a single or double rows of wooden piles. With only few experiments and simulations available to study the hydraulic functioning of PPGs, the correlation between the effectiveness and the characteristics of the groin system has yet to be fully understood....
journal article 2019
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Zhang, R. (author), Zijlema, M. (author), Stive, M.J.F. (author)
In this paper, the ability of the numerical phase resolving model SWASH (Simulating WAves till SHore) to hindcast wave-induced longshore currents is evaluated. Using default settings for all processes modelled, highly accurate results are found for wave heights, mean water levels and longshore currents. While wave current interaction is...
journal article 2018
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Ahmad Azimi bin Kamaluddin, Azimi (author)
Mangroves are tidal trees commonly observed along the sheltered shorelines of most tropical (from equator to 23.5° North and South latitude) and few subtropical (23.5° to 40° North and South latitude) countries. These plants are adapted to loose wet soils, saline habitats and periodic tidal submergence. With more attention paid into the approach...
master thesis 2017
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de Zeeuw, R.C. (author), de Schipper, M.A. (author), Roelvink, D. (author), de Vries, S. (author), Stive, M.J.F. (author)
Assessing swimmer safety along the Dutch coast entails more than only assessing the risk of rip currents. Seven criteria have been formulated to make a comprehensive assessment of swimmer safety along the Dutch coast. These are based on interviews with lifeguards, rescue report statistics and detailed lagrangian measurements of the current...
conference paper 2012
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Treffers, R.B. (author)
Recent study has shown that 3D computations of the morphological development of a coast shows irregularities compared with the 2DH (depth-averaged) computations. Therefore a validation of the surf zone currents computed using the 2DH (depth-averaged) and 3D approach in Delft3D is made. The 2DH and 3D approach are compared using an idealized case...
master thesis 2009
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Ökzan-Haller, H.T. (author), Kirby, J.T. (author)
Surface gravity waves breaking in the nearshore region force a longshore surf zone current. This current can be unstable to longshore periodic perturbations. The continuity and momentum conservation equations averaged over the short wave time scales and over depth present a suitable basis for the modeling of these motions. The governing...
report 1997
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Grasmeijer, B.T. (author), Sies, E.M. (author)
Coastal changes occur mostly as a result of changes in sediment transport along the coast. If at cross-section A, the sediment transport is for any reason larger (or smaller) than at cross-section B, accretion (or erosion) will take place in between the two cross-sections. For prediction of coast-lines in the future, the prediction of the net...
master thesis 1995
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Redondo, J.M. (author), Rodriguez, A. (author), Bahia, E. (author), Falques, A. (author), Gracia, V. (author), Sanchez-Arcilla, A. (author), Stive, M.J.F. (author)
conference paper 1994
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Battjes, J.A. (author), Sobey, R.J. (author), Stive, M.J.F. (author)
Shelf circulation is driven primarily by wind- and tide-induced forces. It is laterally only weakly constrained so that the geostrophic (Coriolis) acceleration is manifest in the response. Nearshore circulation on the other hand is dominated by wave-induced forces associated with shallow-water. wave breaking and is confined to a relatively...
conference paper 1990
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Sadr Lahijani, S.M. (author)
This paper describes efficiency of the rip current barriers against the harbour shoaling. For investigation physical model was used. First wave basin geometry and external water supply was optimized in order to obtain a uniform longshore current along the coast. Then current pattern in 2 conditions -after construction of the breakwater and after...
master thesis 1988
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Olthof, J. (author), Loman, G. (author)
In de periode maart tot april 1985 heeft de Adviesdienst Vlissingen enige brandingsstroommetingen uitgevoerd voor de kust van Walcheren ter hoogte van Joossesweg (nabij Westkapelle). Het doel van het meetonderzoek is het verkrijgen van meer inzicht in de veranderingen die optreden op een gesuppleerd strand ten gevolge van stroom en golven. Met...
report 1986
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Visser, P.J. (author)
This report describes a mathematical model for uniform longshore currents and laboratory experiments on these currents, as also the comparison of theory and experiment. The longshore driving force is modeled taking into account the physical fact that dissipation of wave energy takes place shoreward of the plunge instead of in the whole surf zone...
report 1984
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Visser, P.J. (author)
This report describes the investigation into a method how to obtain the proper longshore current in a wave basin. In this method the basin geometry is optimized and the proper recirculation flow through openings in the wave guides is determined by minimizing the circulation flow between the wave guides. Using different wave fields, two beach...
report 1982
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Ostendorf, D.W. (author), Madsen, O.S. (author)
Two momentum based longshore current models and a preliminary longshore sediment transport model are derived, calibrated and tested in the present investigation. The Linear Longshore Current Model predicts the relatively small longshore current induced by monochromatic, two dimensional, gravity waves of finite height and near normal incidence...
report 1979
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Schepers, J.D. (author)
Er zijn door o.a. Vetlinga en Schepers proeven gedaan in een laboratoriumgoot ter bepaling van zandtransport in de voortplantingsrichting van golven onder invloed van die golven. Doel van deze proeven is om neer inzicht te krijgen in de opwoeling van het bcdemmateriaal aan de bcdem en op die manier in het zandtransportmechanisme . In al die...
master thesis 1978
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Battjes, J.A. (author)
Energy losses in breaking irregular waves are estimated on the assumption that a wave, while breaking, loses only that portion of its height which would be in excess of the breaker height for the given wave period and the mean local depth. This leads to expressions for the magnitude of the radiation stresses as a function of the distance...
report 1972
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Bijker, E.W. (author)
11th Conference on Coastal Engineering in London 1968, the author presented a method for computing the littoral drift starting from the longshore current velocity as this is generated by the waves and with the assumption that the material is stirred up by the waves. In this paper measurements in a model basin are described by which the procedure...
report 1971
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Eagleson, P.S. (author)
Momentum flux considerations are used to formulate a differential equation governing the growth, with distance, of the mean longshore current velocity in the surf-zone on a plane, impermeable beach due to monochromatic waves. The equation is solved for the flow situation downstream of a surf-zone barrier and is shown to compare favorably with...
report 1965
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