Integraal waterbeheer Ketelmeer erosie van slib ten gevolge van scheepvaart vervolgonderzoek

Het vewolgonderzoek erosie door scheepvaart valt in 2 onderwerpen uiteen: 1. Nadere kwantiicering van de emsieflux ten gevolge van scheepvaart. 2. Vergelijking van de mate van verontreiniging van het door scheepvaart opgewerveld slib met die van het slib dat als achtergrondconcentratie in het Ketelmeer aanwezig is. 1. In de scheepvaartroute...

Mean-Flow Measurements in the Boundary Layer and Wake of a Series 60 C_B = .6 Model Ship with and without Propeller

Results are presented from a towing-tank experiment of propeller-hull interaction conducted in order to provide detailed documentation of the complete flow field appropriate both for explicating the flow physics and validating computational methods. Mean-velocity and pressure field measurements were made for the with- and without-propeller...

Interactions between wavemaking and the boundary layer and wake of a ship model

A detailed experimental study has been conducted in a towing tank on a 3.048-meter-long mathematical model, known as the Wigley hull, to study the effects of viscosity on the wavemaking resistance of the ship form. The measurements included total resistance, viscous resistance, pressure distribution, and boundary-layer measurements of the model...

Free-Surface Boundary Layer and the Origin of Bow Vortices

The boundary layer that exists due to the boundary conditions at a curved free surface of a viscous liquid ahead of a body in motion is analyzed. It is shown that surface tension and viscous effects are important and together explain the occurrence of vortices which have been observed on ship bows. The equations of the free-surface boundary...

The relation between the form of cross section the cross section, the method of revetment and the distribution of the water velocities in a waterway

Calculation method for water movement induced by ships in canals

Protection of embankments and bed in inland and maritime waters, and in overflows or weirs

L'etude du probieme de la protection des rives de cours d'eau, taite dans ce rapport, sera limitee au cas d 'un bateau naviguant dans un canal relativement ·etroit. Le risque que Ie fond et les talus du canal soient degrades, est determine par Je caract ere et l'intensite des mouvements qui naissent de la navigation et qui, a leur tour,...