Publicaties
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Experimental and numerical study of a cylinder passing through fluidized natural mud Waterbouwkundig Laboratorium
Manoeuvring behaviour of vessels in muddy waters Waterbouwkundig Laboratorium
The manoeuvring behaviour of vessels is highly affected by their small under keel clearance in access channels and harbours. If sedimentation and the formation of mud layers occur in these areas the manoeuvring behaviour becomes even more challenged, especially because the exact location of the bottom is not unequivocally determined. In such areas the nautical bottom definition, as stated by PIANC, should be applied. Over the past decades ...
Prediction of the forces acting on container carriers in muddy navigation areas using a fluidization parameter Universiteit Gent
To assess the safety of navigation in muddy areas, a comprehensive captive manoeuvring model test program was executed. Based on the results of this experimental program, a four-quadrant manoeuvring model was built with a separate set of coefficients for each combination of under-keel clearance and mud layer characteristics. The disadvantage of this model is that only conditions corresponding with the experimental ones can be simulated. A more ...
Practical squat assessment for a ship manoeuvring in muddy environments Universiteit Gent Waterbouwkundig Laboratorium
Assessment of the potential of radiography and ultrasonography to record flow dynamics in cohesive sediments (mud) Waterbouwkundig Laboratorium Universiteit Gent
The possible use of both radiography and ultrasonography to visualise flow dynamics in cohesive sediments, also known as fluid mud, has been assessed. Ultimately, these techniques are intended to enable the application of Particle Image Velocimetry (PIV) in experimental fluid dynamics using such fluid mud. This research takes into account the specific requirements arising from this objective. Those requirements are primarily penetration depth, ...
Experimental study of a cylinder towed through natural mud Universiteit Gent
With the rapid increase in ship size, the definition of the nautical bottom is becoming more crucial for ports and waterways authorities worldwide. Previous theoretical and experimental research has demonstrated that under certain conditions it is possible to sail through fluidized mud. However, in most numerical models, the complex rheological behaviour of the natural mud is simplified and treated as a Newtonian fluid. To better understand the ...
Evaluation of measuring instruments for the determination of mud characteristics: sub report 2. Overview of measuring instruments and analysis of measurement campaign 3 with regard to density instruments Waterbouwkundig Laboratorium
As part of the optimisation of the follow-up of dredging works, the Department of Mobility and Public Works, Maritime Access division, has purchased a number of density-related measuring instruments. These instruments represent the various measuring principles available on the market for the measurement of in-situ density of (dredged) mud: “With which density instrument (or combination of instruments), with which accuracy and with which ...
Integraal Plan Boven-Zeeschelde: sub report 11. Effect of B-alternatives on sand transport Waterbouwkundig Laboratorium
Een zandtransportmodel werd eerder reeds binnen het project Integraal Plan Boven-Zeeschelde gemaakt. Dit model werd “Scaldis Zand” genoemd. Het werd gevalideerd aan de hand van 13-uursmetingen langsheen de Zeeschelde. Dit model is bedoeld om zandtransport te simuleren en dus geen morfologie. Aangezien er over het ganse modeldomein ongelimiteerd zand aanwezig is, berekent dit model eerder de zandtransportcapaciteit dan het ogenblikkelijke ...
Ship behaviour in shallow and confined water: an overview of hydrodynamic effects through EFD Universiteit Gent
Due to the scale enlargement in the maritime fleet the accessibility of existing harbours worldwide is getting more and more complex. To reduce infrastructural and operational costs for the adaptation of these harbours the knowledge of ship behaviour in horizontally and vertically restricted channels and waterways helps in designing a cost effective access channel. Ship manoeuvrability is changing considerably if the vertical and lateral ...