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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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Kamphuis, J.W. (author)To solve coastal sediment transport and morphology problems, it is necessary to construct a hydrodynamics model to simulate the fluid flow. The hydrodynamics model is then used to calculate sediment transport rates and in turn, these sediment transport rates are used to determine morphology. The hydrodynamics model is based on the Equation of...report 1992
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- Derks, H. (author), Klein Breteler, M. (author) report 1992
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- Wal, M. van der (author) report 1991
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- Sluys, L.J. (author), De Borst, R. (author) journal article 1991
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Steinbuch, M. (author)The application of wind energy conversion systems for the production of electrical energy requires a cheap and reliable operation. Especially at high wind velocities fluctuations from the wind field result in large mechanical loads of the wind turbine. Also fluctuations in the grid voltage may yield large dynamic excitations. In order to realize...doctoral thesis 1989
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van Woerkom, P.T.L.M. (author)For the simulation of rigid spacecraft manipulator dynamics there exists efficient recursive software. Extension of this software for the simulation of flexible spacecraft-manipulator dynamics would have important advantages. In this paper the method of Equivalent Flexibility Modelling (EFM) is outlined. Each flexible body is re-modelled as a...report 1989
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van Woerkom, P.T.L.M. (author), Guelman, M. (author)Four well-known formalisms for mathematical modelling of the dynamics of a spacecraft/manipulator system are derived from the unifying d'Alembert principle. The Newton-Euler formalism is discussed in more detail, as it allows efficient numerical simulation. An algorithm is defined for the control of the manipulator end-effector motion in...report 1987
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Chen, C.J. (author), Singh, K. (author)The use of second order closure turbulence model in predicting turbulent flows is known to be more successful than the classical mixing length model. However, it is found that if the turbulence constants are not altered or modified, the second order closure turbulence model is unable to predict satisfactorily f or some flows such as round jet...report 1985
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Holthuijsen, L.H. (author), Booij, N. (author)Two scientists from the National Institute of Oceanography of India have been trained to use the storm surge model DUCHESS and the wave model DOLPHIN. The results are published separately in two reports. This is the first of them.report 1985
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Ten Brummelhuis, P.G.J. (author), De Jong, B. (author), Heemink, A.W. (author)This report gives an exposition of the applications Kalman filters and the related nonlinear filters offer when used in models describing tidal motion in seas and estuaries. In addition to methods that are generally used in this field, for example deterministic and black-box models, Kalman filters can provide significant contributions in...report 1985
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Nakato, T. (author), Kennedy, J.F. (author), Vadnal, J.L. (author)The principal features of the numerical model developed herein for calculation of flow and sediment-transport distributions in alluvial-river bends may be summarized as follows: i. The secondary-flow strength and the bed topography are uncoupled from the calculation of distributions of lateral shift velocity and streamwise velocity. This is...report 1983
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- Lindenberg, J. (author) report 1982
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- Karelse, M. (author), Perrels, P.A.J. (author) report 1982
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- Kerstma, J. (author) report 1982
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Booij, N. (author)FLOWS is a recently developed ICES subsystem for applications in the field of hydraulic engineering. It is able to compute steady as well as unsteady flows in hydraulic networks of given dimensions. This means that is does not optimize any parameters describing the network. The network may be composed of open and closed channels, reservoirs and...report 1980
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Blankwaardt, B. (author), Van de Burg, J.C. (author), Devilee, B.J. (author), Keesmaat, M. (author), Verspuy, C. (author), Wissenburg, A.P. (author)ONLY SUMMARY IS IN ENGLISH; REST OF THE REPORT IS IN DUTCH ELNAG is a special purpose analog computer especially built for the simulation of unsteady flow in unconfined aquifers (e.g. seadikes). The analog model consists of a resistance-capacitance electrical network (5000 grid-points) which allows the permeability and the storage capacity of an...report 1979
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- Roelfzema, A. (author) report 1979
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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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- Koenis, J.P. (author) report 1979