Searched for: subject:"incipient%5C+motion"
(1 - 11 of 11)
document
van Beek, V.M. (author), Hoffmans, G.J.C.M. (author)
The prediction of backward erosion piping is important for safety assessment of dikes in the Netherlands, where subsurface conditions are prone to this erosion mechanism. In the current assessment methodology, the adapted Sellmeijer rule is in use. In combination with the national safety philosophy and uncertainty in input parameters, this model...
conference paper 2017
document
Schippers, Melanie (author), Jacobsen, Niels G. (author), Soupy Dalyander, P. (author), Nelson, Timothy (author), McCall, R.T. (author)
conference paper 2017
document
Van Beek, V.M. (author)
Backward erosion piping is an internal erosion mechanism during which shallow pipes are formed in the direction opposite to the flow underneath water-retaining structures as a result of the gradual removal of sandy material by the action of water. It is an important failure mechanism in both dikes and dams where sandy layers are covered by a...
doctoral thesis 2015
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Hoan, N.T. (author), Stive, M.J.F. (author), Booij, R. (author), Hofland, B. (author), Verhagen, H.J. (author)
This paper presents the results of an experimental study on stone stability under nonuniform turbulent flow, in particular expanding flow. Detailed measurements of both flow and turbulence and the bed stability are described. Than various manners of quantifying the hydraulic loads exerted on the stones on a bed are extensively reviewed and...
journal article 2011
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Hoan, N.T. (author)
Despite the fact that many studies on the stability of stones in bed protections under flowing water have been conducted, our knowledge is still far from advanced and reliable. Issues like how to quantify the hydraulic loads exerted on the stones on a bed and the associated stability of the stones are still central and most challenging in stone...
doctoral thesis 2008
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Terrile, E. (author), Reniers, A.J.H.M. (author), Stive, M.J.F. (author), Tromp, M. (author), Verhagen, H.J. (author)
Incipient motion of coarse particles under regular shoaling waves is examined. Experiments are performed to investigate the effects of bed fluid acceleration on coarse particle stability. By varying wave height, wave period and water depth, combinations of similar peak orbital velocities and weak to strong intra-wave accelerations were created....
journal article 2005
document
Kolkman, P.A. (author)
Gecombineerde grafische voorstelling Moody/Shields voor de kritieke snelheid voor het begin van beweging van korrels, bepalende grootheden van evenwichtsdiepte en groei van ontgrondingskuilen
report 1992
document
Van der Meulen, T. (author)
Onderzoek naar zeegrind in een permanente twee-dimensionale waterstroom: a) Bepaling van de grootte van het transport van zeegrind voor een viertal stroom snelheden, die groter zijn dan de kritieke stroomsnelheid. Via extrapolatie kan dan de kritieke stroomsnelheid worden bepaald. De moeilijkheid van het constateren van begin van bewegen wordt...
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
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Dronkers, J.J. (author), Breusers, H.N.C. (author), Vinjé, J.J. (author), Venis, W.A. (author), Spaargaren, F. (author)
Considerations on fluid motion in and around closure gaps, two-dimensional local scour in loose sediments, local scour caused by vortex streets, behaviour of dumping material when exposed to currents, results of model tests applied to an actual project *** The closure of the final gaps is the most difficult part of the construction of the dams...
report 1968
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Breusers, H.N.C. (author)
Resultaten van experimenteel onderzoek naar begin van bewegen van loskorrelig materiaal, relatie met Shields formule. Overzicht van uitgangspunten voor het bepalen van het begin van beweging van bodemmateriaal.
report 1962
Searched for: subject:"incipient%5C+motion"
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