Searched for: subject%3A%22mixing%22
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Kleinhans, R. (author), Van Ham, M. (author)
In the last few decades, urban renewal policies have taken firm root in many Western European countries. Underlying these renewal policies is a strong belief in negative neighborhood effects of living in poverty concentration areas, often neighborhoods with a large share of social housing. In Europe, great importance is attached to creating a...
report 2013
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Zhiqiang, F. (author), Van Ham, M. (author), Boyle, P. (author), Raab, G.M. (author)
Most studies investigating residential segregation of ethnic minorities ignore the fact that the majority of adults live in couples. In recent years there has been a growth in the number of mixed ethnic unions that involve a minority member and a white member. To our knowledge, hardly any research has been undertaken to explicitly examine...
report 2012
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Srour, F.J. (author), Máhr, T. (author), De Weerdt, M.M. (author), Zuidwijk, R.A. (author)
This paper describes five sets of 33 Mixed Integer Problem instances each, for a total of 165 instances, derived from a real-world full-truckload pick-up and delivery problem with time windows at the Port of Rotterdam. These instances represent 33 individual days of data encompassing 65 jobs and 40 trucks. We report, in this paper, on the...
report 2010
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Kranenburg, C. (author)
The Prandtl mixing-length model of turbulent exchange of mass and momentum is applied to calculate the entrainment of overlying water into a layer of suspended fine sediment at a horizontal bed. In the field the flow and turbulence in such a concentrated benthic suspension (CBS) are driven by a streamwise pressure gradient resulting from the...
report 1999
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Kranenburg, C. (author)
In quiescent water bodies that form part of estuarine or coastal water systems, such as harbours and access channels, fine sediments may deposit to form concentrated benthic suspensions (CBS). The flow velocities in these mud layers may become low, and the viscosities may become large, so that the Reynolds number decreases below a critical value...
report 1999
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Kranenburg, C. (author)
Adopting a 1DV numerical model including the standard k-eps turbulence model, Winterwerp et al. (1999) calculated a saturation concentration for an initially uniform distribution of fine sediment concentration in steady flow. At concentrations exceeding the saturation concentration the concentration profile collapsed and all sediment was...
report 1998
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Tukker, J. (author)
This investigation on shallow mixing layers has two main objectives: - To gain insight in the influence of the depth on the evolution of large, horizontal eddies in a lateral mixing layer in a shallow free-surface flow. - To gain insight in the contribution of these eddies to the entrainment into the layer and to the mixing and to the transport...
report 1994
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Voorendt, M. (author), Van de Graaf, J. (author)
Results of sediment transport calculations are often necessary in solving practical coastal engineering problems. (Sediment transport due to waves and currents). Many transport formulae have been proposed in literature in the past. Selection of the proper one while solving a particular problem, is a difficult task for a coastal engineer. In...
report 1994
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Uittenbogaard, R.E. (author), Imberger, J. (author)
report 1993
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Uittenbogaard, R.E. (author)
report 1993
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Uittenbogaard, R.E. (author)
report 1993
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Adams, A.A. (author), Hecker, G.E. (author)
Proceedings of the 4th conference organized by IAHR (section on experimental methods and physical modeling) on scale effects. Special keynotes and invited presentations describe the contributions of Dr. Keulegan and their relation to present work in mixing processes, stratified flow and other areas of fluid mechanics. These proceedings contain...
report 1990
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Van Dam, G.C. (author)
verspreiding van stoffen in getijdewateren berust in overwegende mate op dezelfde basismechanismen als verspreiding in rivieren en meren. Kwantitatieve verschillen ontstaan onder meer door de periodieke wisseling van getijde-stromingen tegenover het meer persistente karakter van de stroming in rivieren. In zeegebieden voegt de horizontale...
report 1987
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Abraham, G. (author)
report 1986
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Uittenbogaard, R.E. (author)
report 1986
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Van Dijk, W. (author), Agema, J.F. (author)
report 1985
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Moser, G.M. (author), Bakker, J.P.G. (author)
report 1985
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Kranenburg, C. (author)
A k-model is formulated that consists of the turbulent kinetic energy equation and an algebraic expression for the mixing length taking into account the influence of stratification. Applicability of the model is restricted to shallow, nearly horizontal flows. For local-equilibrium flows the model reduces to the well-known mixing-length...
report 1985
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Wang, L.X. (author)
Some measurements were conducted in a suddenly expanding flume with a rough bottom. In the approach flume, the friction velocity was determined in three ways and the distributions of turbulence intensities and Reynolds stress in a vertical were obtained. The measurement of the separating turbulent flow comprised the distribution of depth...
report 1983
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Dronkers, J. (author), Zimmerman, J.T.F. (author)
Some fundamental notions related to the flushing of tidal basins are reviewed and some important mixing mechanics are discussed. It is shown that the characteristics of mixing and flushing in tidal basins can be described in various but connected ways, introducing the concepts of time scales and dispersion coefficients. For some simple...
report 1981
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