TY - GEN
T1 - Effects of Clearance Between Seabed and Bottom of a VLFS on Hydroelastic Responses
AU - Ikoma, Tomoki
AU - Furuya, Shoichiro
AU - Aida, Yasuhiro
AU - Tan, Lei
N1 - Publisher Copyright:
© 2022, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.
PY - 2022
Y1 - 2022
N2 - Possibility to utilize sea areas by using very large floating structures (VLFSs) has remained when we consider impact to ocean environment, a change of uses, decommission and lifecycle. We can consider installing VLFSs in very shallow seas as well as deep sea areas. In Japanese case, it is, for instance, in Tokyo bay areas. Although added-mass increases very much due to a huge horizontal area, studies in which effects of variation of the added-mass on hydroelasticity are summarized are not a lot. Besides, how the elastic deformation changes has not also been investigated when clearance between seabed and a bottom plan decreases because of draft increasing in shallow sea areas. This study used the linear potential theory bases prediction method for hydroelasticity problems. The paper calculated pontoon type VLFSs. Then it was investigated and summarized how the elastic motion characteristics were affected by water depth, mass of a VLFS and the clearance and in taking into account of variation of the added-mass. From the results, effects of physical draft of VLFSs was not large when deep water depth and we could calculate the elastic response only using suitable mass of a VLFS even if the draft of the VLFS to be calculated was a bit different. In addition, when the clearance decreased, the added-mass increased very much and characteristics of the elastic motion were affected very much.
AB - Possibility to utilize sea areas by using very large floating structures (VLFSs) has remained when we consider impact to ocean environment, a change of uses, decommission and lifecycle. We can consider installing VLFSs in very shallow seas as well as deep sea areas. In Japanese case, it is, for instance, in Tokyo bay areas. Although added-mass increases very much due to a huge horizontal area, studies in which effects of variation of the added-mass on hydroelasticity are summarized are not a lot. Besides, how the elastic deformation changes has not also been investigated when clearance between seabed and a bottom plan decreases because of draft increasing in shallow sea areas. This study used the linear potential theory bases prediction method for hydroelasticity problems. The paper calculated pontoon type VLFSs. Then it was investigated and summarized how the elastic motion characteristics were affected by water depth, mass of a VLFS and the clearance and in taking into account of variation of the added-mass. From the results, effects of physical draft of VLFSs was not large when deep water depth and we could calculate the elastic response only using suitable mass of a VLFS even if the draft of the VLFS to be calculated was a bit different. In addition, when the clearance decreased, the added-mass increased very much and characteristics of the elastic motion were affected very much.
KW - Added-mass
KW - Clearance
KW - VLFS
KW - Water depth
UR - http://www.scopus.com/inward/record.url?scp=85113226772&partnerID=8YFLogxK
U2 - 10.1007/978-981-16-2256-4_20
DO - 10.1007/978-981-16-2256-4_20
M3 - Conference contribution
AN - SCOPUS:85113226772
SN - 9789811622557
T3 - Lecture Notes in Civil Engineering
SP - 331
EP - 345
BT - WCFS2020 - Proceedings of the 2nd World Conference on Floating Solutions
A2 - Piatek, Lukasz
A2 - Lim, Soon Heng
A2 - Wang, Chien Ming
A2 - Dinther, Rutger de Graaf-van
PB - Springer Science and Business Media Deutschland GmbH
T2 - 2nd World Conference on Floating Solutions, WCFS 2020
Y2 - 6 October 2020 through 8 October 2020
ER -