Searched for: +
(1 - 20 of 31)

Pages

List view
Grid view
document
Patel, R.P. (author)
Measurements of the turbulent stresses in fully-developed pipe flow have been made as an overall test of the DISA constant-temperature hot-wire anemometer. The measurements were made with single slanting wires and a normal wire. The shearing stress was measured at two Reynolds numbers and compared with values computed from the pressure drop down...
report 1963
document
Hinze, J.O. (author), Leijdens, H. (author), Van den Brug, J.B. (author), Kleiweg, D. (author)
A l'aide de la méthode du ruban vibrant de Schubauer et Klebanoff. on a étudié expérimentalement l'évolution tridimensionnelle d'une perturbation sinusoïdale locale introduite dans une couche limite laminaire. Les distributions de la vitesse moyenne et de l'intensité de la composante axiale de la turbulence, de même que le spectre d'énergie de...
report 1964
document
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
document
Lumley, J.L. (author), Khajeh-Nouri, B. (author)
A rational closure technique is presented for the first and second moment-equations in a stratified, contaminated turbulent flow, Following the application of high Reynolds/Peclet number approximations, remaining third moments are expanded about the isotropic, homogeneous state. The stratified, uncontaminated case reduces to seventeen equations...
report 1973
document
Vreugdenhil, C.B. (author)
Interne cursus van het Waterloopkundig Laboratorium over turbulentie, bevat de onderwerpen: -basisvergelijkingen; -statistische beschrijving; -transportprocessen; -wandturbulentie; -tijdsafhankelijke grenslagen; -vrije turbulentie; -nieuwe turbulentietheorien.
report 1977
document
Nezu, I. (author)
Ph.D. thesis
report 1977
document
Atkins, R. (author)
The use of a small two-component electromagnetic current meter to record turbulent velocities in a laboratory flume is described. The results from these experiments are compared with results obtained previously using different measuring techniques.
report 1980
document
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
document
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
document
Uittenbogaard, R.E. (author)
report 1986
document
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
document
Flokstra, C. (author)
report 1986
document
Abraham, G. (author)
report 1986
document
Flokstra, C. (author)
report 1988
document
Pietrzak, J. (author), Kranenburg, C. (author), Abraham, G. (author)
report 1988
document
Mierlo, M.C.L.M. van (author), Ruiter, J.C.C. de (author)
report 1988
document
Okayasu, A. (author)
The characteristic motion of water under breaking waves and the turbulence structure in the surf zone were investigated through detailed two-dimensional velocity measurements in a wave flume. Significant difference was found between the breaking processes in the outer and inner regions of the surf zone. The velocity field in each region consists...
report 1989
document
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
document
Bernard, R.S. (author), Schneider, M.L. (author)
Without some correction for the interaction between lateral curvature and vertically nonuniform velocity, depth-averaged numerical models cannot predict the gradual migration of high velocity toward the outside of channel bends. Conventional depth-averaging does not account for the curvature-induced secondary flow that gives rise to the...
report 1992
document
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
Searched for: +
(1 - 20 of 31)

Pages

List view
Grid view