document

Analysis SWAN hindcasts Wadden Sea, Oosterschelde and Slotermeer

Van Vledder, G.P. (author)

Results of hindcast studies with the SWAN wave model in the Amelander Zeegat, the Oosterschelde estuary and the Slotermeer were analyzed to detect the cause of under-prediction of low-frequency wave energy in the coastal zone, the causes of prediction errors in the presence of currents and the underprediction of wave heights In depth-limited...

report 2008

document

Hindcast tidal inlet of Ameland storms: January and March 2007

Lansen, J. (author), Jacobse, J. (author), Kluyver, M. (author), Arnold, E. (author)

During the storm season from October 2006 untill April 2007 several severe storms occurred at the North Sea. Three storm periods are selected to study the realiability of the SWAN wave model by means of a hindcast. The objective of this hindcast is to gain insight into the performance of the SWAN model, especially under storm conditions for the...

report 2007

document

Evaluatie van de ontwerpwaarden voor golfcondities in de Westerschelde

Jacobse, S. (author)

AANLEIDING In 1997 en 1998 heeft het RIKZ golfcondities berekend voor het ontwerpen van nieuwe bekledingen voor dijken aan de Westerschelde [2, 3]. Deze waarden zijn bepaald met het toenmalig relatief nieuwe wiskundige model voor golven op ondiep water: SWAN (Simulating WAves Nearshore). In de beginfase van het verbeteringstraject zijn in de...

report 2003

document

Report on turbulent flow velocities in the surface region of LCS

Losada, I.J. (author), Garcia, N. (author), Lara, J.L. (author)

Development and calibration of a volume averaging RANSmodel and corresponding k-epsilon equations. Calibration is done with 2DV flume tests.

report 2003

document

Final phase-resolving Boussinesq-type models

Avgeris, I. (author), Karambas, T. (author), Prinos, P. (author), Koutitas, C. (author), Belloti, G. (author), Briganti, R. (author), Brocchini, M. (author)

The design of structures to be built in the nearshore region generally involves the evaluation of different possible layouts, under the effects of local wave and cunents conditions, with the aim of minimizing costs and maximizing the desired results. In particular the design of lowcrested structures involves optimisation of several parameters,...

report 2003

document

Calibrated 2DV near field flow model (Cobras Cornell Breaking Waves and Structures)

Anonymous, A. (author)

Cobras Manual

report 2002

document

Swell across the continental shelf

Ardhuin, F. (author)

The transformation of surface gravity waves propagating through shallow regions is investigated with extensive field data from the North Carolina continental shelf. A spectral energy balance equation is derived for a bidimensional bottom topography with random small-scale irregularities, in which bottom friction is introduced heuristically whith...

report 2001

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Suite of bench mark tests for the shallow water wave model SWAN

Anonymus, A. (author)

Set of data to be used to verify wave software, especially the SWAN package. Includes also a verification calculation.

report 2000

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Verwerking van Egmond 1982 meting EG2320 ten behoeve van: - de validatie van golfmodellen in zeer ondiep water; - de bepaling van golfparameters in zeer ondiep water i.v.m. berekeningsmethoden voor de sterkte/veiligheid van dijken

Roskam, A.P. (author)

Het doel van de in het voorgaande beschreven verwerking van Egmond meting EG2320 was tweeledig. Het eerste doel: - het verkrijgen van een dataset met resultaten van golfmetingen in een gebied dat van diep water naar de kust toe gaat, met enige nadruk op meetpunten in zeer ondiep water. Zo'n dataset is nodig bij het valideren van golfmodellen...

report 1996

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A Numerical Wave Model for the Refraction and Diffraction of Irregular Waves. Part II: Numerical Experiments of the Wave Model CREON

Gao, Q. (author), Radder, A.C. (author), Booij, N. (author)

The numerical wave model CREON is developed to predict the propagation and transformation of wave properties in shallow water. In Gao et al. (1993), which is referred to as Part I in the following, a description is given of the theoretical and numerical treatment of the model. In the present report, we present various computational results. The...

report 1994

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Comparison of computations with Boussinesq-like models and laboratory measurements

Dingemans, M.W. (author)

It is already known for a long time that one of the major discrepancies between computations with Boussinesq-like models and measurements, is due to the inaccurate representation of the linear frequency dispersion in the Boussinesq-like long wave models. A comparison of various models as given in Dingemans (1973) showed already large differences...

report 1994

document

Frequentieverandering door bodemwrijving in HISWA

Andorka Gal, J.H. (author)

Dit rapport beschrijft de modelberekeningen die uitgevoerd zijn om het effect van een ingeschakelde frequentieverandering door bodemwrijving weer te geven ten opzichte van een uitgeschakelde frequentieverandering door bodemwrijving. Het rapport is als volgt ingedeeld: hoofdstuk 1 geeft een beschrijving van het gebied, hoofdstuk 2 behandelt de...

report 1993

document

Golfdoordringing in het zeegat van Texel

Andorka Gal, J.H. (author)

Dit rapport beschrijft de modelberekeningen die uitgevoerd zijn om te onderzoeken of de ongevoelige en lage significante golfhoogtes, onder extreme condities, zoals die zijn gevonden in 'Wave conditions along the Dutch coast' (Delft Hydraulics, DH, 1993), realistisch zijn. Het rapport is als volgt ingedeeld: hoofdstuk 1 geeft een inleiding,...

report 1993

document

Guide for the program Exact-NL

Van Vledder, G.P. (author), Weber, S.L. (author)

A detailed description is given of a set of programs called EXACT-NL, which computes fetch- or duration limited wave growth with an explicit expression for the resonant four-wave interactions. This guide is meant as a user's manual. lt describes the principles and usage of each program of the EXACT-NL model. We used the EXACT-NL model for the...

report 1988

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Verification of numerical wave propagation models with laboratory measurements: HISWA verification in the directional wave basin

Dingemans, M.W. (author)

report 1987

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Kinematics and Directionality of Waves in the Surf Zone

Van Heteren, J. (author), Stive, M.J.F. (author)

Realistic modelling of the internal kinematics of wind waves breaking on a beach is of great practical importance, e.g. for the modelling of coastal processes and for the design of coastal structures. A fundarnental aspect in this modelling concerns. the relation between the surface elevation and the internal kinematics. In this respect it...

report 1985

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Stormvloedkering Oosterschelde: Modellering lokale golfvariaties rond de kering

Deelen, C. (author)

report 1984

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Verification of numerical wave propagation models with field measurements: CREDIZ verification Haringvliet

Dingemans, M.W. (author)

report 1983

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Description of the KNMI Operational Wave Forecast Model GONO

Bruinsma, J. (author), Janssen, P.A.E.M. (author), Komen, G.J. (author), Peeck, H.H. (author), Saraber, M.J.M. (author), De Voogt, W.J.P. (author)

The purpose of this report is to give a description of the GONO computercode, which is operational at KNMI for many years now. The program was developed by J.W. Sanders, and its deep water version is based on a Norwegian wave prediction model. built by C. Haug in the sixties. Shallow water effects are however important in the southern part of...

report 1980

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On the parabolic equation method for water wave propagation

Radder, A.C. (author)

A parabolic approximation to the reduced wave equation is investigated for the propagation of periodic surface waves in shoaling water. The approximation is derived from splitting the wave field into transmitted and reflected components. In the case of an area with straight and parallel bottom contourlines, the asymptotic form of the solution...

report 1978