Wave effects on manoeuvring ships in shallow water
Tello Ruiz, M.Á.; De Caluwé, S.; van Zwijnsvoorde, T.; Delefortrie, G.; Vantorre, M. (2015). Wave effects on manoeuvring ships in shallow water, in: MARSIM 2015, International Conference On Ship Manoeuvrability And Maritime Simulation, 8th – 11th September 2015, Newcastle University, United Kingdom: proceedings. pp. [1-15]
In: (2015). MARSIM 2015, International Conference On Ship Manoeuvrability And Maritime Simulation, 8th – 11th September 2015, Newcastle University, United Kingdom: proceedings. Newcastle University. School of Marine Science and Technology: Newcastle. , more
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Document type: Conference paper
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| Author keywords |
Drift forces; Shallow water; Experimental; Numerical; KVLCC2 |
| Authors | | Top |
- Tello Ruiz, M.Á., more
- De Caluwé, S.
- van Zwijnsvoorde, T., more
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- Delefortrie, G., more
- Vantorre, M., more
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| Abstract |
Several authors have recently studied manoeuvring considering the more general case of ship motion in six degrees of freedom and incorporating wave effects into the analysis. Wave forces and wave-induced motions have been taken into account by combining the conventional analysis of both seakeeping and manoeuvring. However, those studies mostly focus on deep water scenarios. Shallow water conditions, which occur in access channels to harbours, have a substantial effect on both wave characteristics (e.g. wave steepness, elliptic orbits) and ship behaviour (e.g. importance of squat). At the towing tank for manoeuvres in shallow water (co-operation Flanders Hydraulics Research - Ghent University), a systematic series of captive model tests has been executed with a 1/75 scale tanker model of the KVLCC2 reference ship. This test program was partially carried out in the frame of the european research program energy efficient safe ship operation (SHOPERA). The KVLCC2 model was systematically tested in both calm water and in regular waves, and in two different water depths. During tests different combinations of incoming wave angle, wave amplitudes and period were used. The effects of incident waves on the motions, forces and moments acting on the ship in the horizontal plane, and its importance considering ship manoeuvrability in shallow water will be discussed. In addition, the experimental results will be compared to numerical methods based on strip theory and 3d boundary integral equation methods. |
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