Searched for: classification%3A%22TKJ3000%22
(1 - 20 of 21)

Pages

document
Blom, A. (author)
Vertical sorting fluxes and the resulting organisation of grain size fractions over bed elevations, i.e. the vertical sorting profile, influence bedform dimensions and the bed surface composition. As a result, they will affect the bed roughness, the rate and composition of the sediment transport, the large-scale river morphology, and water...
report 2003
document
Verbeek, H. (author), Jansen, B. (author), Van Zetten, J. (author)
In opdracht van de Directie Zuid-Holland heeft het RIZA een onderzoek naar het erosiegedrag van het Haringvliet voorbereid en uitgevoerd. Het doel van dit onderzoek was het bepalen van de kritieke snelheid voor erosie; in modellen werd tot nu toe een geschatte waarde van 0.33 m/s (0.2 à 0.3 N/m2) aangehouden. Het onderzoek heeft op twee manieren...
report 1994
document
Toet, C. (author), Blom, G. (author)
In de waterbodem van het Ketelmeer is een grote hoeveelheid sterk verontreinigd slib aanwezig. Nu de kwaliteit van het aangevoerde IJsselslib verbetert ten opzichte van de kwaliteit in de jaren 60 en 70, is er sprake van het risico dat opwerveling van oud, verontreinigd slib nog jarenlang de kwaliteit van het water in het Ketelmeer, en via...
report 1992
document
Brilhuis, R. (author)
In deze nota zijn gereviseerde resultaten gepresenteerd van de gelijknamige nota 83.12 van ing. J. Zeekant, directie Waterhuishouding en Waterbeweging district Zuidoost Arnhem. Sinds het verschijnen van nota 83.12 zijn de waterstanden behorend bij de maatgevende afvoer vastgesteld. Deze gegevens alsmede recente gegevens van bodemliggingen en...
report 1988
document
Van den Berg, J.H. (author)
Er zijn betrekkelijk weinig literatuurgegevens over het sedimenttransport onder omstandigheden van een fijnzandige bodem, een waterdiepte van minder dan 5 m en een stroomsnelheid groter dan mis. In deze nota worden, als aanvulling op onderzoek door het WL in dit bereik, gegevens gepresenteerd van bij genoemde omstandigheden gemeten transporten...
report 1987
document
Van Mierlo, M.C.L.M. (author)
From Struiksma et al (1985) it can be concluded that more experimental evidence is needed to achieve a correct formulation. Generally the available data can only be used for an integral check as, for instance, was done by Zimmerman and Kennedy· ( 1978). More useful information could be obtained by carrying out experiments directed at the...
report 1986
document
Rijn, L.C. van. (author)
report 1985
document
Rijn, L.C. van. (author)
report 1984
document
Bolton, P. (author)
The terms 'wash load', 'suspended bed material load' and 'bed load' are not clearly defined but, if applied with care, provide a useful basis for sub-dividing the total discharge of sediment in a river for the purpose of measurement. The accuracy with which each of the three types of sediment transport must be measured will depend on their...
report 1983
document
White, W.R. (author), Paris, E. (author), Bettess, R. (author)
Rational regime relationships for the width, depth and slope of a river in equilibrium are developed using the Ackers and White sediment transport formula and the White, Paris and Bettess friction relationships, together with a principle of maximum sediment transporting capacity. This concept of maximising the sediment transporting capacity is...
report 1981
document
White, W.R. (author), Mill, H. (author), Crabbe, A.D. (author)
In 1972 Ackers and White (Refs 24 and 25) proposed a new sediment transport theory and tested the theory against f1ume data. This data consisted of about 1000 measurements with particle sizes in the range 0.04 < D(mm) < 5 and sediment specific gravities in the range 1.07 < s < 2.65. Subsequent phases in this investigation have included (i) the...
report 1972
document
Jorritsma, J. (author)
report 1972
document
Breusers, H.N.C. (author), Schukking, W.H.P. (author)
Onderzoek naar de stabilteit van loskorrelig bodemmateriaal (zand, grind) onder invloed van stroming. Ontwikkeling van stabiliteitsformuleringen op basis van de Shields vergelijking. Aandacht oor de verschillende gradaties van transport en de definitie van "begin van beweging".
report 1971
document
Paintal, A.S. (author)
report 1969
document
Apmann, R.P. (author), Rumer, R.R. (author)
The suspension of sediment particles by turbulent eddy diffusion in a non- uniform flow region was studied, using the convective-diffusion equation as a mathematical model. A simplified form of the equation for which mixing characteristics and flow velocities 'vere assumed uniform was found to accurately describe the sediment concentration...
report 1967
document
Aspden, J.A.T. (author), Wainer, I.J. (author), Wells, D.R. (author), Zwamborn, J.A. (author)
Tests have been done in a laboratory flume, to evaluate the influence of vertical rods of 3 mm dia on the hydraulic and sedimentological characteristics of the flow. The first two tests have been done with some 10 cm waterdepth. In both tests the s ame flow rate and sediment transport was used, the only difference between the tests being the...
report 1962
document
Frijlink, H.C. (author)
Extensive study or the rivers Niger and Benué in order to describe the hydraulics and morphology with the aim to improve inland navigation in Nigeria. Part I gives a summary of the original NEDECO studies and their results as contained in the Report, without summarising the information obtained from other sources. This is followed by a...
report 1959
document
Meyer-Peter, E. (author), Müller, R. (author)
In the following paper, a brief summary is first of all given of the results and interpretation of tests already made known in former publications of the Laboratory for Hydraulic Research and Soil Mechanics at the Federal Institute of Technology, Zurich. After that, an attempt is made to derive an empirical law of bed-load transport based on...
report 1948
document
Shields, A. (author)
Ph.D thesis of Shields, original version in German. This document is the basis of all modern sediment transport formulae, and develops the concept of bed shear stress.
report 1936
document
van Veen, J. (author), Schaank, E.M.H. (author)
Sediment measurements in the Dutch rivers
report 1936
Searched for: classification%3A%22TKJ3000%22
(1 - 20 of 21)

Pages