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document
Juhl, J. (author)
Summary of test results.
report 1996
document
Alikhani, A. (author), Tomasicchio, R.G. (author), Juhl, J. (author)
The major part of the research on berm breakwaters has concentrated on the berm reshaping of a trunk section exposed to head-on waves. Recent research included aspects related to individual stone movements under perpendicular wave attack (eg Tomasicchio et al). For a berm breakwater trunk section consisting of berm stones smaller than a certain...
report 1996
document
Van der Meer, J.W. (author), Vis, F.C. (author)
The extensive research of Van der Meer (1988) on dynamically stable slopes, including berm breakwaters, but also rock and gravel beaches. was re-analyzed and focussed only on the behaviour of the seaward slope of berm breakwaters in Van der Meer (1992), leading to a computational model on a personal computer. Results are presented in this paper....
report 1995
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Sigurdarson, S. (author), Viggosson, G. (author), Benediktsson, S. (author), Smarason, O.B. (author)
The paper describes the design philosophy for rubble-mound berm breakwaters. The estimated yield from an armourstone quarry is used as an integrated part of the design in an attempt to optimize the utilization of the quarry. All size grades are used from the quarry.
report 1995
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Juhl, J. (author)
Discussions
report 1995
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Hald, T. (author), Burcharth, H.F. (author), Frigaard, P. (author)
As a part of the MAST II Berm Breakwater Structures, existing data from conducted laboratory tests have been reanalised. The objective was to evaluate the effect of the longshore transpsort on both the roundhead and trunk, the ht.u,er exposed to both head-on waves and oblique inegular waves varying from 15 to 30 degrees angle of incidence. 3...
report 1995
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Holmes, P. (author), Tamburic, Z. (author)
The existing Non-linear Shallow-water Wave Equation (NSW) model, from MAST I, has been re-established and is fully operational. The model has been developed to determine the flow characteristics on the slope and within the permeable layer of porous coastal structures as a result of the effects of incident waves, Figure 1. The model can be used...
report 1995
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Tamburic, Z. (author), Holmes, P. (author)
A series of comprehensive velocity measurements was carried out on the three dimensional model of the berm breakwater at the Danish Hydraulic Institute (DHI) in September 1995. Those measurements were a part of the research on berm breakwaters within the MAST II programme sponsored by the Commission of the European Communities. The major part of...
report 1995
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Juhl, J. (author), Alikhani, A. (author), Sloth, P. (author), Archetti, R. (author)
For berm breakwaters as compared with traditional rubble mound breakwaters, special measures have to be taken for the breakwater roundhead. If stone displacements occur on a roundhead, the stones will be moved in the wave direction and will loose most of their stabilising effect. A point of special concern is whether, and under which conditions,...
report 1995
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Van Gent, M.R.A. (author), Petit, H.A.H. (author)
A two-dimensional numerical model that can simulate plunging waves on permeable structures is described. The 'Volume Of Fluid' method is used to solve the incompressible Navier-Stokes equations (2DV). This enables simulations with very complex shapes of the free surface like those occurring in breaking waves. The model has been extended with...
report 1995
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Juhl, J. (author), Jensen, O.J. (author)
This paper describes the features of benn breakwaters including advantages and drawbacks in comparison to traditional rubble mound structures. A review of selected practical experience with eight berm breakwaters is described in terms of typical cross-sections and key parameters (two examples from Norway. Iceland and USA, and one from Faroe...
report 1995
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Van Gent, M.R.A. (author), D' Angremond, K. (author)
Wave interaction with dynamically stable structures is studied by means of a verified numerical model. The model can simulate wave motion on and in permeable structures. For dynamically stable structures, including gravel beaches, berm breakwaters and reef-type structures, a procedure is developed to simulate the natural response to wave attack....
report 1995
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Juhl, J. (author)
Berm breakwater structures: Workshop programme.
report 1995
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Juhl, J. (author)
Discussions at the 2nd MAST2 workshop.
report 1995
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Espedal, T.G. (author), Lothe, A.E. (author)
It will be impossible to replace all the ferry routes with regular roads. However, looking at the social economic benefits, one will soon discover that it will pay to shorten the ferry routes as much as possible. One way of shortening the ferry links is to challenge the forces of the nature and actually place the ferry harbour out towards the...
report 1994
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Allsop, N.W.H. (author)
These proceedings describes the progress and results of the MAST I research project "G6-S Coastal Structures', which has addressed the techniques available for the analysis and design of coastal and harbour structures such as sea walls, revetments, and breakwaters. They sumrnarise the information collected and developments completed under the...
report 1992
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Van Gent, M.R.A. (author)
Computations made with the numerical model Odyflocs and compared with Skylla computations. Water pressures and water movements near the surface of a berm breakwater are computed.
report 1992
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Andersen, O.H. (author), Juhl, J. (author), Sloth, P. (author)
Results of physical tests done at DHI on the stability and regressionof Berm Breakwaters.
report 1992
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Juhl, J. (author)
Overview of work done, summary of research programme.
report 1992
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Andersen, O.H. (author), Norton, P. (author), Tomasicchio, G.R. (author)
Investigations on reshaping of berm breakwaters. Based on test at Delft Hydraulics. Focus on incipient motion (threshold of movement).
report 1992
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