Searched for: subject%3A%22modelling%22
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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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Holthuijsen, L.H. (author), Booij, N. (author)
Formulate a numerical wave hindcast model which can be used to obtain realistic estimates of wave conditions in the Oosterschelde as input to a numerical geomorphological model. A directionally decoupled, parametric wave hindeast model is recommended that includes parameterized versions of conventional bottom- and current refraction, some degree...
report 1983
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Tilmans, W.M.K. (author)
report 1983
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Verhagen, H.J. (author)
The river Douro debouches into the Atlantic Ocean near Oporto (Portugal) with a funnel-shaped mouth, partly closed from the ocean with a sand spit. Both the wave-induced longshore sediment transport as the sediment yield of the river are limited by the available quantity of sediment (non-alluvial conditions). The results of some sediment...
report 1983
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Hartsuiker, G. (author)
report 1983
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Hartsuiker, G. (author)
report 1983
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van Woerkom, P.T.L.M. (author)
Software design for digital computer simulation of the dynamics of flexible spacecraft equipped with actuators and sensors, should take into account two properties of the overall system: (i) s.ampled-data control of the spacecraft leads to discontinuous inputs (forcing functions) in the differential equations of motion, thereby requiring...
report 1983
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Delil, A.A.M. (author), Daniels, H.A.M. (author)
report 1983
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Pool, A. (author)
This lecture reviews the model studies that were made with the object to reduce en-route separation standards. It also describes the basic principles of the Reich model used in most of these studies and of the Minimum Navigation Performance Specification (MNPS). Paper presented at the Princeton University Conference 155, "Safety Issues in Air...
report 1983
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Delil, A.A.M. (author)
Radiation heat transfer is a non-negligible physical process in an open-cycle magnetohydrodymic generator. It constitutes an important part of the energy conservation law, one of the fundamental equations describing the behaviour of the MHD combustion gas in the generator. Radiation heat transfer is modelled following the generally accepted...
report 1983
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Loeve, W. (author), van den Dam, R.F. (author)
The NLR in the Netherlands renders scientific support and technical assistance for the design and operation of aircraft and spacecraft. The approach of NLR can be characterized by integration of experimental and theoretical investigations. For this an integrated computer and terminal network has been developed that links both NLR laboratory...
report 1983
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van den Assem, D. (author), Bunk, P.B. (author)
Preliminary experiments have been performed with a laboratory model of an electro-osmotic heat pipe filled with ethanol. With dismounted electro-osmotic pump, the heat transport through the pipe and the temperature distribution along the pipe wall have been measured. The measurements have been performed as a function of the temperature...
report 1983
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Svendsen, I.A. (author)
A theoretical model is developed for wave heights and set-up in a surf zone. In the time averaged equations of energy and momentum the energy flux, radiation stress and energy dissipation are determined by simple approximations which include the surface roller in the breaker. Comparison with measurements shows good agreement. Also the...
report 1983
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Vogelaar, H.L.J. (author)
A description is given of the two-dimensional test setup in the pressurized wind tunnel HST of the NLR, for the testing of multiple airfoils at high Reynolds numbers. Results of the first tests with this setup are validated. For this validation a number of additional tests were performed in the HST as well as in the atmospheric wind tunnel HST 3...
report 1983
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Kerssens, P.J.M.A. (author)
report 1983
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Vriend, H.J. de. (author)
report 1983
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Rooij, N.M. de (author)
report 1982
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Wind, H.G. (author)
report 1982
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Lindenberg, J. (author)
report 1982
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Wijngaarden, N.J. van (author)
report 1982
Searched for: subject%3A%22modelling%22
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