Searched for: author:"De Vriend, H.J."
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Stive, M.J.F. (author), De Vriend, H.J. (author)
We investigate the vertical, wave averaged distributions of shear stresses and Eulerian flow in normally incident, shoaling and breaking waves. It is found that shear stresses are solely due to wave amplitude variations, which can be caused by shoaling, boundary layer dissipation and/or breaking wave dissipation. The resulting shear stress and...
conference paper 1994
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Capobianco, M. (author), De Vriend, H.J. (author), Nicholls, R.J. (author), Stive, M.J.F. (author)
Long-term prediction of sediment transport and of morphological behaviour in the coastal zone, in response to human interference or to change in environmental conditions (collectively global change) is an increasingly important issue in coastal zone management, especially in relation to the needs for environmentally compatible development....
conference paper 1993
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Capobianco, M. (author), De Vriend, H.J. (author), Nicholls, R.J. (author), Stive, M.J.F. (author)
A possible approach for the development of simple predictive methods of shoreface profile evolution is described. By application of a detailed process-based, cross-shore morphodynamic model and of some inductive assumptions we build simple descriptions which reproduce possible behaviours of the upper zones of shoreface profile as a function of...
conference paper 1993
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De Vriend, H.J. (author), Capobianco, M. (author), Chesher, T. (author), De Swart, H.E. (author), Latteux, B. (author), Stive, M.J.F. (author)
journal article 1993
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Stive, M.J.F. (author), De Vriend, H.J. (author), Nicholls Robert, J. (author), Capobianco, M. (author)
conference paper 1993
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De Vriend, H.J. (author)
The present lecture deals with models for situations in which the spatial dimensions cannot be separated according to the scales of the morphological processes. Rather common examples of such situations are the morphological evolution near structures (e.g, breakwaters), river outflows, tidal inlets, etc. But also in the absence of such distinct...
report 1992
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Stive, M.J.F. (author), Nicholls Robert, J. (author), De Vriend, H.J. (author)
journal article 1991
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Stigter, C. (author), Verhagen, H.J. (author), De Vriend, H.J. (author), Van der Weijde, R.W. (author), Van Raalten, C. (author), Loxham, M. (author)
In the Netherlands today much attention is paid to the effect of coastal structures on the environment. In the past it was usual to quantify the effect of such a structure on its environment solely with the purpose of deciding whether that effect could imply any hazard to the structure itself (or to structures in the neighbourhood). Nowadays...
conference paper 1990
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Stive, M.J.F. (author), Roelvink, D.A. (author), De Vriend, H.J. (author)
conference paper 1990
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Stive, M.J.F. (author), Roelvink, D.A. (author), De Vriend, H.J. (author)
conference paper 1990
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De Vriend, H.J. (author), Roelvink, J.A. (author)
Het onderzoek van kustprocessen in het algemeen, alsmede de recente studie van de Nederlandse kust in het kader van de Nota Kustverdediging, hebben tal van nieuwe inzichten opgeleverd in de werking van de zandige Nederlandse kust als morfologisch systeem. In dit rapport worden de verkregen resultaten geintegreerd tot een samenhangend beeld van...
report 1989
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De Vriend, H.J. (author), Koch, F.G. (author)
I: Flow of water in a curved open channel with a fixed plane bed II: Flow of water in a curved open channel with a fixed uneven bed III: Accuracy of measurements in a curved open channel In this report the flow of water in a curved open channel, which consists of a38 m long straight section followed by a 90° bend with a radius of 50 m (see...
report 1987
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De Vriend, H.J. (author), Reinalda, R. (author), Derks, H. (author)
The 1981 and 1982/1983 field measurement campaigns in the nearshore zone at Egmond, The Netherlands, are outlined and the access to the resulting data sets is indicated. Besides, the use of these data for mathematical model validation is discussed and some general remarks are made on the set-up of synoptic field campaigns to generate data sets...
report 1987
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Stive, M.J.F. (author), De Vriend, H.J. (author)
conference paper 1987
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De Vriend, H.J. (author), Stive, M.J.F. (author)
journal article 1987
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Dingemans, M.W. (author), Stive, M.J.F. (author), Bosma, J. (author), De Vriend, H.J. (author), Vogel, J.A. (author)
conference paper 1986
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De Vriend, H.J. (author), Geldof, H.J. (author)
Results of a mathematical model for the depth-averaged main flow velocity in shallow river bends are compared with measurements in two consecutive sharply-curved short bends in the river Dommel, The Netherlands. The computed main velocity distribution agrees rather well with the measured one in the larger part of each bend. Near the bend exits,...
report 1983
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De Vriend, H.J. (author)
Making use of a mathematical model solving the complete NavierStokes equations for steady flow in coiled rectangular pipes, fully-developed laminar flow in shallow curved channels is analysed physically and mathematically. Transverse convection of momentum by the secondary flow is shown to cause important deformations of the main velocity...
doctoral thesis 1981
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Kalkwijk, J.P.T. (author), De Vriend, H.J. (author)
The mathematical model presented describes the flow in rivers of which: i the depth is small compared with the width, ii the width is small compared with the radius of curvature, iii the horizontal length scale of the bottom variations is of the order of magnitude of the width. Within these limits, the channel alignment can be arbitrary and it...
report 1980
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De Vriend, H.J. (author)
This report describes an extensive experiment on steady turbulent flow in a rather sharply curved U-shaped flume with a shallow rectangular cross-section, under almost the same conditions as earlier, less extensive measurements in the same flume. The experiment was carried out as a part of a research project aiming at a mathematical model of the...
report 1979
Searched for: author:"De Vriend, H.J."
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