Results 1 to 10 of about 295,962 (120)

Dynamic Behavior of a Flexible Multi-Column FOWT in Regular Waves

Journal of Marine Science and Engineering, 2021
A tank experiment using a flexible multi-column floating offshore wind turbine (FOWT) model in regular waves was carried out to clarify the floater elastic response and its influence on the floater motion.
Taisuke Takata, Mayuko Takaoka, Rodolfo T. Gonçalves, Hidetaka Houtani, Yasuo Yoshimura, Kentaro Hara, Sho Oh, Raúl Dotta, Edgard B. Malta, Kazuhiro Iijima, Hideyuki Suzuki   +10 more
doaj   +1 more source

Non-Linear Motion Characteristics of a Shallow Draft Cylindrical Barge Type Floater for a FOWT in Waves

Journal of Marine Science and Engineering, 2021
A shallow draft cylindrical barge type floater with footing close to the water surface was experimentally evaluated in waves to investigate non-linear motion characteristics.
Hideyuki Suzuki, Yuta Sakai, Yasuo Yoshimura, Hidetaka Houtani, Lucas H. S. Carmo, Haruki Yoshimoto, Ken Kamizawa, Rodolfo T. Gonçalves   +7 more
doaj   +1 more source

Effect of Heave Plates on the Wave Motion of a Flexible Multicolumn FOWT

Energies, 2022
Three models with different footing types were used to clarify the effect of heave plates on the hydrodynamic behavior of the elastic response of a flexible multicolumn floating offshore wind turbine (FOWT).
Taisuke Takata, Mayuko Takaoka, Hidetaka Houtani, Kentaro Hara, Sho Oh, Edgard B. Malta, Kazuhiro Iijima, Hideyuki Suzuki, Rodolfo T. Gonçalves   +8 more
doaj   +1 more source

Plane Wave Reverse Time Image for Nondestructive Tests

IEEE Access, 2023
Reverse time migration (RTM) has been a popular method in industry duo to its ability of imaging complex subsurface and no dip restriction. However, RTM based on full matric capture (FMC) data is limited by the time cost of the calculation and cannot be ...
Wanqiu Zheng, Xiaohong Meng, Jian Wang
doaj   +1 more source

Effect of Wave Attenuation on Shear Wave Velocity Determination Using Bender Element Tests

Sensors, 2022
Wave attenuation is a widespread physical phenomenon in most acoustic tests, but there is a scarcity of quantitative investigations into the influence of wave attenuation on the determination of shear wave travel time in bender element tests.
Yanbin Gao, Xiaojun Zheng, Hao Wang, Wenkang Luo   +3 more
doaj   +1 more source

Wave and Wind Responses of a Very-Light FOWT with Guy-Wired-Supported Tower: Numerical and Experimental Studies

Journal of Marine Science and Engineering, 2020
A floating offshore wind turbine (FOWT) concept with a guy-wire-supported tower was investigated to obtain motion results in waves considering its elastic model characteristics.
Hideyuki Suzuki, Hiroki Shiohara, Anja Schnepf, Hidetaka Houtani, Lucas H. S. Carmo, Shinichiro Hirabayashi, Ken Haneda, Toshiki Chujo, Yasunori Nihei, Edgard B. Malta, Rodolfo T. Gonçalves   +10 more
doaj   +1 more source

Wave Response of a Monocolumn Platform with a Skirt Using CFD and Experimental Approaches

Journal of Marine Science and Engineering, 2022
This paper aims to investigate the nonlinear motion characteristics of a monocolumn type floater with skirts numerically and experimentally. Wave calibration, free decay, and regular wave tests were simulated using a computational fluid dynamics (CFD ...
Masaki Katafuchi, Hideyuki Suzuki, Yuya Higuchi, Hidetaka Houtani, Edgard B. Malta, Rodolfo T. Gonçalves   +5 more
doaj   +1 more source

Potential impacts in soil slope of deformation and water content on elastic wave amplitude

Heliyon, 2022
Early warning during rainfall-induced landslides employs widely to save economic losses and casualties. Using elastic wave velocity for early warning benefits from the relationship between water content, shear deformation, and elastic wave velocity of ...
Ming Xie, Jiahao Liu, Song Lu
doaj   +1 more source

An assessment of the public health surveillance strategy based on molecular testing during three major pandemic waves of COVID-19 in Brazil.

PLOS Global Public Health, 2023
A national laboratory-based surveillance system was adapted to monitor the situation of SARS-CoV-2 in Brazil. The objective of the study was to compare the challenges in implementing COVID-19 surveillance strategies based on the Ministry of Health's (MoH)
Lorena G Barberia, Alexandra Boing, João Gusmão, Fabio Miyajima, Adriano Abud, Brigina Kemp, Marcela Zamudio, Tatiane C Moraes de Sousa   +7 more
doaj   +1 more source

Wave Load Mitigation by Perforation of Monopiles

Journal of Marine Science and Engineering, 2020
The design of large diameter monopiles (8–10 m) at intermediate to deep waters is largely driven by the fatigue limit state and mainly due to wave loads.
Jacob Andersen, Rune Abrahamsen, Thomas Lykke Andersen, Morten Thøtt Andersen, Torben Ladegaard Baun, Jesper Lykkegaard Neubauer   +5 more
doaj   +1 more source