Design of Berth n.12 in the Port of Ventspil, Latvia

Ventspil Free Port Authority has commissioned the design of a new berth capable of hosting post Panamax vessels and having a retaining height of 18.5 m. In proximity of the quay wall two sewage pipes lay on the bottom of the Venta River’s bed, which need to be combined into one single conduit with a diameter of 900 mm. In proximity of the quay...

Eendimensionale beschouwing van de bezinking van hooggeconcentreerde zandwatermengsels onder turbulente omstandigheden

De concentratie van het opgezogen zandwatermengsel en de mate van turbulentie in het beun van een sleephopperzuiger zijn van grote invloed op de snelheid van bezinken van het zandwatermengsel in het beun. Om de kennis van deze invloedsfactoren op de snelheid van bezinken te vergroten is een proefopstelling gebouwd waarin de bezinking van...

Korel-korrel interacties

Weinig is bekend omtrent de interacties tussen korrels en vloeistof in een hoog-geconcentreerd zand-watermengsel, zoals dat in een slurry-stroom (zandsluitingen en zettingsvloeiingen) of bij sheetflow (bij zandtransport door golven aan de kust) optreedt. In dit rapport worden de resultaten gepresenteerd van experimenten, waarin deze interacties...

Static and dynamic response of a spanning pipeline in a wave and/or current field

The purpose of the subproject "Pipe Dynamics" was to develop a numerical model that can be used to determine the response of a pipeline in free span loaded by waves and/or current, and to evaluate the probability that the stresss in the pipeline will exceed the yield stres of steel under specified conditions.

Dynamics of a submarine pipeline by excited by waves

A submarine pipeline on the seabed will adjust its shape to the sea bottom profile. The sea bottom profile is not perfectly flat. One can encounter irregularities in the sea bottom due to slopes, lumps and gullies. These irregularities are already present at the time the pipeline is installed. Because the pipeline has a certain bending stiffness...

Experimental research on hydrodynamic coefficients of sand-roughened, rigid, circular cylinders near a plane boundary in oscillating fluid

The hydrodynamic coefficients of a sand-roughened horizontal cylinder have been determined for various values of the relative roughness and relative gap height between the cylinder and the plane boundary. The Morison equation was used to describe the inline force signal. The transverse force was analysed with respect to the peak values during a...