Article
Engineering, Marine
Jialong Jiao, Songxing Huang, Carlos Guedes Soares
Summary: A CFD-based model is used to estimate ship motion responses in bi-directional cross waves, analyzing wave characteristics and ship responses under different conditions, and proposing navigational strategies and operational guidance to ensure safety.
Article
Engineering, Marine
Tao He, Dakui Feng, Liwei Liu, Xianzhou Wang, Hua Jiang
Summary: This study investigates the response of ships with/without tanks in beam waves using the CFD method and experiments. The simulation results are in good agreement with the experimental results, indicating the accuracy of the numerical method. The study examines the effects of liquid height, tank size, and incident wave wavelength ratio on ship motion.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2022)
Article
Engineering, Marine
Mitchell G. Borg, Claire Demarco Muscat-Fenech, Tahsin Tezdogan, Tonio Sant, Simon Mizzi, Yigit Kemal Demirel
Summary: Conventional LNG cargo vessels face tank-fill limitations which restrict commercial operations. This study uses computational fluid dynamics to analyze the sloshing dynamics of partially-filled chamfered rectangular tanks. The findings show that the use of partition barriers reduces impact in a specific fill-range.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2022)
Article
Engineering, Ocean
J. J. Wiegerink, T. E. Baldock, D. P. Callaghan, C. M. Wang
Summary: This paper introduces a new concept of slosh suppression blocks to mitigate sloshing in floating closed containment aquaculture systems. The blocks reduce sloshing periods and turbulent motions in the tank, creating a calmer environment for fish wellbeing.
APPLIED OCEAN RESEARCH
(2022)
Article
Engineering, Marine
Xiyu Liao, Zhanyang Chen, Hongbin Gui, Mengchao Du
Summary: The study employs a CFD method to analyze the slamming behavior and seakeeping of trimarans in oblique waves, highlighting significant differences from conventional monohull ships and emphasizing the importance of severe bow slamming and green water observation during ship design and evaluation.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2021)
Article
Engineering, Marine
Jane-Frances Igbadumhe, Jack Bonoli, John Dzielski, Mirjam Furth
Summary: The advantages of Floating Production Storage and Offloading Units (FPSOs) continue to drive their high demand and wide usage. The presence of slack cargo tanks in FPSOs due to continuous loading and offloading can affect their seakeeping performance. However, there is limited experimental data available on this impact. This paper experimentally investigates the effect of liquid cargo on the roll motion of a pair of two-row cargo tanks in a FPSO model under regular beam waves. The results show that the motion effect of liquid cargo on floating vessels cannot be studied using solid cargo, and that varying the liquid cargo loading affects the Response Amplitude Operators (RAOs) of floating vessels.
Article
Engineering, Marine
Liwei Yu, Shuqing Wang, Ning Ma
Summary: A 6 degrees of freedom ship motion model has been developed to accurately simulate wave-induced motions in both regular and irregular waves. The model shows good agreement with experimental results in regular waves, especially for ship speed and pitch motion. However, large discrepancies in pitch and roll motion spectra were observed under different wave patterns in irregular waves.
Article
Mechanics
H. Alemi Ardakani, T. J. Bridges, M. R. Turner
Summary: This study investigates the dynamic coupling between a rectangular container undergoing planar pendular oscillations and the potential fluid sloshing inside it. The Neumann boundary-value problem for the fluid motion is derived using the Bateman-Luke variational principle. The suspended container's motion is described by the Euler-Lagrange equation for a forced pendulum. The linearized fluid and rigid-body partial differential equations yield the characteristic equation for the coupled dynamical system's natural and resonant frequencies. It is noteworthy that internal 1:1 resonances exist in a realistic experimental setup, which has significant physical implications. Additionally, a new instability has been discovered in the linearized coupled problem, where instability arises when the rod length is shorter than a critical length, and an explicit formula is provided.
EUROPEAN JOURNAL OF MECHANICS B-FLUIDS
(2023)
Article
Engineering, Ocean
Ryosuke Suzuki, Michio Ueno, Yoshiaki Tsukada
Summary: In this study, the authors proposed a numerical simulation method to estimate 6 degrees of freedom motions of a manoeuvring ship in regular waves. The method is applicable to general manoeuvres and short waves, and can be used for both blunt and slender ships.
APPLIED OCEAN RESEARCH
(2021)
Article
Engineering, Ocean
Songxing Huang, Jialong Jiao, Chaohe Chen
Summary: This study investigates the seakeeping behavior of a vessel in uni-directional and bi-directional waves using CFD method. The results show that ship motion response is generally larger in bi-directional waves compared to uni-directional waves. Furthermore, severe bow slamming and green water under bi-directional waves are also observed and discussed.
APPLIED OCEAN RESEARCH
(2021)
Article
Engineering, Marine
Liwei Liu, Dakui Feng, Xianzhou Wang, Zhiguo Zhang, Jiawei Yu, Meixia Chen
Summary: This study investigates the effects of liquid sloshing on the parametric roll of a ship through numerical simulations. The results demonstrate that liquid sloshing can significantly decrease the natural roll frequency of the ship, leading to a lower speed range where the parametric roll occurs.
Article
Nuclear Science & Technology
V. S. Sanapala, K. Velusamy, B. S. V. Patnaik
Summary: This study investigates the liquid sloshing in a three-dimensional rectangular tank subjected to surge and coupled surge, sway, and heave excitations. The findings are significant for practical applications in nuclear systems, as they can provide insights into the behavior of fluid and structural response, thus enhancing the safety of storage tanks.
ANNALS OF NUCLEAR ENERGY
(2022)
Article
Engineering, Marine
Hossam S. Abdelwahab, Shan Wang, Josko Parunov, C. Guedes Soares
Summary: This study compares the wave-induced ship motions and loads calculated by five numerical codes in regular waves using different seakeeping theories with existing experimental data. Multiple measures are applied to quantify the uncertainty in the calculated transfer functions. A new measure of uncertainty, the modified total difference, is proposed for determining the uncertainty of individual seakeeping codes based on experimental data. The results indicate that the codes show differences in their predicted results, and the wave-induced loads have higher uncertainties compared to motions.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2023)
Article
Engineering, Marine
Songxing Huang, Jialong Jiao, Chaohe Chen
Summary: This paper analyzes the motion responses of a S175 container ship hull in cross sea using numerical methods, revealing that the ship's vertical motion responses induced by cross waves can be significant and experience obvious roll-pitch-coupled motion, with severe bow slamming and green water observed. The study provides new insights for further understanding the navigation safety of ships in cross sea conditions.
JOURNAL OF MARINE SCIENCE AND TECHNOLOGY
(2022)
Article
Engineering, Marine
Daejeong Kim, Soonseok Song, Tahsin Tezdogan
Summary: Predicting ship manoeuvring characteristics in waves is challenging. Traditional methods fail to accurately consider the effect of waves, while unsteady Reynolds-Averaged Navier-Stokes (RANS) computations can resolve the interactions with high accuracy.
Article
Engineering, Civil
Jai Ram Saripilli, Debabrata Sen
INTERNATIONAL JOURNAL OF OFFSHORE AND POLAR ENGINEERING
(2017)
Article
Engineering, Marine
Jai Ram Saripilli, Debabrata Sen
JOURNAL OF MARINE SCIENCE AND APPLICATION
(2018)
Proceedings Paper
Engineering, Civil
Debabrata Sen, Jai Ram Saripilli
PROCEEDINGS OF THE ASME 36TH INTERNATIONAL CONFERENCE ON OCEAN, OFFSHORE AND ARCTIC ENGINEERING, 2017, VOL 1
(2017)
Article
Engineering, Ocean
Canjun Yang, Dingze Wu, Puzhe Zhou, Shuyang Ma, Rui Zhou, Xin Zhang, Yang Zhang, Qingchao Xia, Zeliang Wu
Summary: The Argo Global Ocean Observing Network is the preeminent ocean observation network worldwide, but its buoys fail to complete long-term observations in designated sea areas due to their lack of lateral movement. To solve this problem, a portable underwater profiler (PUP) that combines buoy and underwater glider functionalities was developed. The PUP is lightweight, allows for rapid deployment, and enables continuous observation.
APPLIED OCEAN RESEARCH
(2024)
Article
Engineering, Ocean
Knut Andreas Kvale, Bernt Leira, Ole Oiseth
Summary: As future floating bridges become longer, the chance of encountering significant inhomogeneous wave conditions increases. This paper presents an approach to model these conditions using generalized harmonic decomposition and applies it to a conceptual floating bridge model in Norway. The paper focuses on frequency-domain simulation and highlights the importance of considering the coherency in swell sea conditions.
APPLIED OCEAN RESEARCH
(2024)