TY - GEN
T1 - HYDRODYNAMIC PERFORMANCE OF FLOATING PONTOON TYPE BREAKWATER WITH SKIRT WALLS AND DIFFERENT POROSITY
AU - Neelamani, Subramaniam
AU - AlRagum, Alanoud
N1 - Publisher Copyright:
Copyright © 2022 by ASME.
PY - 2022
Y1 - 2022
N2 - Floating breakwaters (FBW) are widely used in moderate wave climatic conditions. Literature shows that the width of a pontoon type FBW should be about 50% of the incident wavelength in order to achieve 50% wave height reduction at the lee side of the FBW. Hence, for a typical wavelength of 40 m, the width of pontoon FBW needed is about 20 m. Such a FBW may not be cost competitive. Is it possible to reduce the width of the pontoon FBW significantly by adding skirt walls (single, twin, triple or five) under the keel. What will be the effect on mooring forces? In order to get solutions for this problem, experimental investigations were carried out on a typical pontoon type FBW as well as pontoon with skirt walls. Both opaque and porous skirt walls are used. Wave transmission, reflection and mooring forces on both the seaside and lee side are measured. It was found from this study that it is possible to reduce the width of the pontoon by 20 to 40% by introducing three or five skirt walls. However, introducing skirt walls is found to increase the mooring forces by 10 to 30%. A US patent (Patent No. US 9,340,940 B2 dated 17 May 2016) is obtained for the novelty of this study.
AB - Floating breakwaters (FBW) are widely used in moderate wave climatic conditions. Literature shows that the width of a pontoon type FBW should be about 50% of the incident wavelength in order to achieve 50% wave height reduction at the lee side of the FBW. Hence, for a typical wavelength of 40 m, the width of pontoon FBW needed is about 20 m. Such a FBW may not be cost competitive. Is it possible to reduce the width of the pontoon FBW significantly by adding skirt walls (single, twin, triple or five) under the keel. What will be the effect on mooring forces? In order to get solutions for this problem, experimental investigations were carried out on a typical pontoon type FBW as well as pontoon with skirt walls. Both opaque and porous skirt walls are used. Wave transmission, reflection and mooring forces on both the seaside and lee side are measured. It was found from this study that it is possible to reduce the width of the pontoon by 20 to 40% by introducing three or five skirt walls. However, introducing skirt walls is found to increase the mooring forces by 10 to 30%. A US patent (Patent No. US 9,340,940 B2 dated 17 May 2016) is obtained for the novelty of this study.
KW - Floating breakwater
KW - mooring forces
KW - wave transmission
UR - https://www.scopus.com/pages/publications/85140767083
U2 - 10.1115/OMAE2022-80202
DO - 10.1115/OMAE2022-80202
M3 - Conference contribution
AN - SCOPUS:85140767083
T3 - Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE
BT - Ocean Engineering; Honoring Symposium for Professor Gunther F. Clauss on Hydrodynamics and Ocean Engineering
PB - American Society of Mechanical Engineers (ASME)
T2 - ASME 2022 41st International Conference on Ocean, Offshore and Arctic Engineering, OMAE 2022
Y2 - 5 June 2022 through 10 June 2022
ER -