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- Verwey, A. (author), Agtersloot, R.C. (author) report 1998
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Hinze, J.O. (author), Sonnenberg, R.E. (author), Builtjes, P.J.H. (author)Measurements have been made of the distributions of mean velocity, turbulence intensities and turbulence shear-stress in a turbulent boundary-layer downstream of a hemi-spherical cap attached onto the plane rigid wall. The eddy-viscosity, when computed in the classical way according to Boussinesq's concept from the lateral gradient of the mean...report 1972
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- Flokstra, C. (author) report 1986
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- Uittenbogaard, R.E. (author) report 1993
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Koppel, T. (author)Experiments on unsteady separating flow past a sudden expansion in an open channel are described. To simulate tidal flow the flow rate in the approach channel varied as a half-sine with time. Different visualization techniques to obtain an insight into the behaviour of the separating vortex in time and space were used. Laser-Doppler velocimetry ...report 1981
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- Mierlo, M.C.L.M. van (author), Ruiter, J.C.C. de (author) report 1988
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Justesen, P. (author)Close to the bottom the no-slip condition will retard the flow and cause a boundary layer to develop. In nature this boundary layer will for most practical purposes be turbulent and the bed will be rough. Usually the boundary layer is confined to a thin layer close to the bed having a typical thickness of 0.2 m under surface gravity waves. The...report 1985
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- Boot, G. (author) report 1998
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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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- Akkerman, G.J. (author), Verheij, H.J. (author) report 1998
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- Akkerman, G.J. (author), Verheij, H.J. (author) report 1998
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- Uittenbogaard, R.E. (author), Hoffmans, G.J.C.M. (author), Akkermans, R.J. (author) report 1998
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- Hofland, B. (author) report 2002
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Lehfeldt, R. (author)The density distribution within a fluid is of great importance for flow and transport phenomena in geophysical computational fluid dynamics. All turbulent exchange processes are influenced by buoyancy effects and must be adequately considered in numerical models. Parameterizations of the vertical eddy viscosity and eddy diffusivity are presented...report 1991
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- Mosselman, E. (author), Akkerman, G.J. (author), Verheij, H.J. (author), Hoffmans, G.J.C.M. (author), Jongeling, T.H.G. (author), Petit, H.A.H. (author) report 2000
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Hoffmans, G.J.C.M. (author)Scour is the lowering of the sea or river-bed as a result of non-equilibrium sediment transport conditions and can be divided into several categories (Breusers and Raudkivi, 1991). Local scour, which may occur at the base of a structure because of the affected flow pattern, can severely endanger the stability of this structure. Many varieties of...report 1993
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- Aswatha Narayana, P.A. (author) report 1995
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Kranenburg, C. (author)Mathematical description of turbulent diffusion with constant mean velocity gradient.report 1975
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Jovic, S. (author), Ramaprian, B.R. (author)An experimental study of the developing two-dimensional turbulent wake behind a streamlined flat-plate is reported. The purpose of this study was to understand the evolution of the wake structure from the one characteristic of the boundary layer to that characteristic of the far-wake, and to investigate whether organized motions are present in...report 1986
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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