Searched for:
(1 - 16 of 16)
document
Bonci, M. (author), de Jong, Pepijn (author), van Walree,, F (author), Renilson, M (author), Keuning, J.A. (author), van 't Veer, A.P. (author)
The coupling between heel and the loads in the horizontal plane is usually neglected in manoeuvrability studies. However, the heel–sway and heel–yaw coupling can play an important role in potentially unsafe conditions, such as in a following sea. In these conditions, small fast vessels experience dynamic instabilities which threaten their...
journal article 2019
document
Bordogna, G. (author), Muggiasca, S. (author), Giappino, S. (author), Belloli, Marco (author), Keuning, J.A. (author), Huijsmans, R.H.M. (author), van 't Veer, A.P. (author)
The Flettner rotor is attracting increasing attention as a viable technology for wind-assisted ship propulsion. Nonetheless, the influence of the Reynolds number on the aerodynamic performance of rotating cylinders is still unclear and under debate. The present study deals with a series of wind-tunnel experiments on a large-scale Flettner...
journal article 2019
document
Keuning, J.A. (author), Hillege, L. (author)
In the present paper the development of the Delft Systematic Deadrise Series (DSDS) is described. The DSDS has been under development for decades by now and consists of a large family of systematically varied hard chine planing monohulls, based on the original research by Clement and Blount, which have all been tested in the same speed range,...
conference paper 2017
document
Bonci, M. (author), de Jong, Pepijn (author), van Walree,, F (author), Renilson, M (author), Keuning, J.A. (author), Huijsmans, R.H.M. (author)
In order to provide an insight into the manoeuvring of high speed crafts, an experimental study was undertaken at the towing tank of Delft University of Technology, using a rescue vessel of the Royal Netherlands Sea Rescue Institution (KNRM).<br/>
conference paper 2017
document
van der Kolk, N.J. (author), Keuning, J.A. (author), Huijsmans, R.H.M. (author)
A Reynolds-Averaged Navier Stokes computational fluid dynamics (RANS-CFD) package will be one of the primary tools used during the development of a performance prediction program for Wind-Assisted commercial ships. The modelling challenge presented by large separated flow structures in the wake of the sailing ship points to a conscientious...
conference paper 2017
document
van der Kolk, N.J. (author), Keuning, J.A. (author), Huijsmans, R.H.M. (author)
Wind energy as an auxiliary form of propulsion for commercial ships has again become of great interest as a possible response to volatile fuel prices and increasingly stringent environmental regulations. A well-founded performance prediction tool is a key prerequisite for the further development of this promising technology, and with the support...
conference paper 2016
document
Bordogna, G. (author), Keuning, J.A. (author), Huijsmans, R.H.M. (author), Fossati, Fabio Vittorio (author), Belloli, Marco (author)
In recent years wind-assisted propulsion for commercial ships has gained an increasing interest as valuable alternative to reduce fuel pollutant emissions. However, the development of feasible and commercially viable wind propulsion systems to partially (or fully) propel a ship is nowadays hindered by the difficulties of modelling the...
conference paper 2016
document
Bordogna, G. (author), van der Kolk, N.J. (author), Huijsmans, R.H.M. (author), Keuning, J.A. (author), Fossati, F.V. (author)
Development of a Performance Prediction Program for Commercial Ships
poster 2015
document
Keuning, J.A. (author)
The invention concerns a ship whereby the hull and the mechanical propulsion device are designed such that the Froude number is larger than 0.5. In the aft ship the hull has a bottom with V-shaped bottom surfaces with a deadrise angle that is less than 40 degrees and the hull has substantially vertical sides. In the hull are a passenger...
patent 2014
document
Keuning, J.A. (author)
The invention concerns a vessel (l) comprising a transfer system for transferring persons or goods from the vessel while subjected to waves and/or swell towards a substantially stationary destination, wherein the transfer system comprises a platform (2) having a first mass for supporting the persons or goods during transfer, and platform...
patent 2014
document
Keuning, J.A. (author)
The invention concerns a vessel (1) having a planing surface (2) and a transom (3) at a stern of the vessel, mounted on the transom is an interceptor (4) and an actuator (7) to move the interceptor in vertical direction. In accordance with the invention the transom (3) defines a sharp edge with the planing surface and the underside of the...
patent 2014
document
Keuning, J. (author)
The invention concerns a ship designed for use at high speed and heavy seas having a single long and slender hull with a narrow beam and a more or less vertical bow, whereby the front half of the hull has more or less vertical sides, minimal flare in the bow sections and towards the bow an increase in draught at its center line combined with a...
patent 2008
document
Keuning, J. (author)
The invention concerns a ship (1) for use at high speed and/or heavy seas having a single long and slender hull, a sharp bow (4) and the aft end (11) of the hull has a flat or slightly V-shaped bottom (7) with at least one aft rudder (10), one or more propellers (9) and/or waterjets as propulsions means whereby the foreship (3) has a draught...
patent 2008
document
Keuning, J.A. (author)
The invention concerns a ship designed for use at high speed and heavy seas having a single long and slender hull with a narrow beam and a more or less vertical bow, whereby the front half of the hull has more or less vertical sides, minimal flare in the bow sections and towards the bow an increase in draught at its center line combined with a...
patent 2008
document
Keuning, J.A. (author)
The invention concerns a ship designed for use at high speed and heavy seas having a single long and slender hull with a narrow beam and a more or less vertical bow, whereby the front half of the hull has more or less vertical sides, minimal flare in the bow sections and towards the bow an increase in draught at its center line combined with a...
patent 2008
document
Keuning, J.A. (author)
doctoral thesis 1994
Searched for:
(1 - 16 of 16)