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Sustainable Hydrodynamic Modelling in Offshore and Ocean Engineering
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Sustainable Hydrodynamic Modelling in Offshore and Ocean Engineering

A special issue of Sustainability (ISSN 2071-1050). This special issue belongs to the section "Sustainable Oceans".

Deadline for manuscript submissions: closed (31 March 2024) | Viewed by 6166

Special Issue Editors

Dr. Enhao Wang

E-Mail Website
Guest Editor
Institute for Ocean Engineering, Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, China
Interests: marine renewable energy; vortex-induced vibration; computational fluid dynamics; fluid–structure interaction; marine hydrodynamics
Prof. Dr. Wanhai Xu

E-Mail Website
Guest Editor
State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University, Tianjin 300350, China
Interests: dynamics and control of marine structures; wave energy conversion; vortex-induced vibration; fluid mechanics
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Qing Xiao

E-Mail Website
Guest Editor
Department of Naval Architecture, Ocean & Marine Engineering, University of Strathclyde, Glasgow G4 0LZ, UK
Interests: marine renewable energy; modelling of fluid-structure-interaction for wave energy converter; bio-inspired tidal energy device and offshore floating wind turbine
Special Issues, Collections and Topics in MDPI journals
Dr. Yuanchuan Liu

E-Mail Website
Guest Editor
College of Engineering, Ocean University of China, Qingdao 266100, China
Interests: offshore wind turbine; floating structure dynamics; fluid–structure interaction; coupled analysis method; vortex-induced vibration

Special Issue Information

Dear Colleagues,

The ocean is an important element of global life-support systems and is a valuable asset for the sustainable development of society. The lag in exploitation technology as well as the unreasonable and insufficient development and utilisation of marine resources has resulted in the serious waste of resources and severe damage to the marine environment. Sustainable development of the ocean has become one of the major challenges encountered by the human race.

The rational exploitation of marine resources is inseparable from high-end offshore and ocean engineering equipment. With the rapid development of testing and simulation techniques, hydrodynamic modelling has provided strong support for achieving breakthroughs in key technologies in offshore and ocean engineering. It has been an important topic with great theoretical and practical significance. Therefore, we are delighted to announce this Special Issue entitled “Sustainable Hydrodynamic Modelling in Offshore and Ocean Engineering”, which will collect papers presenting experimental, theoretical, analytical, empirical and numerical studies on the hydrodynamics in offshore and ocean engineering applications for the sustainable development of the ocean. 

In this Special Issue, original research articles and reviews are welcome. Research areas may include (but are not limited to) the following:

  • hydrodynamic experimental testing;
  • theoretical/analytical methods in hydrodynamics;
  • computational fluid dynamics;
  • fluid–structure interaction simulation;
  • boundary element method;
  • empirical/semi-empirical modelling;
  • machine/deep learning-based hydrodynamic models;
  • hydrodynamic modelling in digital twin of offshore and ocean structures.

We look forward to receiving your contributions.

Dr. Enhao Wang
Prof. Dr. Wanhai Xu
Prof. Dr. Qing Xiao
Dr. Yuanchuan Liu
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Sustainability is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • sustainable development and utilisation of the ocean
  • offshore floating wind turbine
  • tidal current energy converter
  • wave energy device
  • marine hydrodynamics
  • experimental testing
  • fluid–structure interaction
  • empirical modelling
  • artificial intelligence
  • digital twin

Published Papers (3 papers)

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Research

15 pages, 4910 KiB  
Article
Numerical Analysis of the Impact Parameters on the Dynamic Response of a Submerged Floating Tunnel under Coupling Waves and Flows
by Wanhai Xu, Zhiyou Song, Guangjun Liu and Yumeng Sun
Sustainability 2023, 15(21), 15241; https://doi.org/10.3390/su152115241 - 25 Oct 2023
Viewed by 614
Abstract
The Submerged Floating Tunnel (SFT) is a highly promising cross-sea transportation structure. Due to its body being suspended in water, waves and flows are the primary environmental loads it encounters. Existing numerical simulations have been based on potential flow theory, which fails to [...] Read more.
The Submerged Floating Tunnel (SFT) is a highly promising cross-sea transportation structure. Due to its body being suspended in water, waves and flows are the primary environmental loads it encounters. Existing numerical simulations have been based on potential flow theory, which fails to fully consider shear forces and the nonlinear characteristics of the flow field. To overcome this limitation, the Computational Fluid Dynamics (CFD) approach, relying on solving the Navier-Stokes equations, can be employed. In this study, we establish a CFD model for the SFT and analyze the impact mechanisms of wave-flow coupling on its dynamic response, considering parameters such as wave height, flow velocity, wave direction, and flow direction. With increasing wave height, the acceleration, mooring tension, and heave amplitude of the SFT significantly increase, and the nonlinear characteristics of its dynamic response become more pronounced. For example, when wave height, Hi, increases from 0.046 m to 0.138 m, the maximum value of dimensionless heave, δz/Hi, increases from 0.075 to 0.284, nearly quadrupling in magnitude. When waves and flows propagate in the same direction, the heave amplitude of the SFT increases compared to the case with waves acting alone, while sway and roll amplitudes decrease. Under conditions of higher flow velocity, the SFT displaces significantly along the direction of flow and water depth, deviating significantly from its original equilibrium position. At this point, the tunnel primarily experiences periodic forces due to vortex shedding, and the anchor chain on the downstream side remains slack. In scenarios where waves and flows propagate in opposite directions, both the maximum acceleration and mooring tension of the SFT increase significantly. For instance, the onshore tension of the cable, Fon, increases by 36%, while the offshore tension, Foff, increases by 89%. Full article
(This article belongs to the Special Issue Sustainable Hydrodynamic Modelling in Offshore and Ocean Engineering)
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11 pages, 5109 KiB  
Article
Investigation into the Water Exit Behavior of a Cavity
by Xueyi Li and Feidong Zheng
Sustainability 2023, 15(2), 1007; https://doi.org/10.3390/su15021007 - 05 Jan 2023
Cited by 1 | Viewed by 837
Abstract
Launching-type ship lifts are commonly used in navigational mountain rivers to realize river channelization and communicate different water systems. However, the complicated water–gas–solid coupling process incurred during the water exit of cavities beneath a ship chamber can strongly affect the stability of the [...] Read more.
Launching-type ship lifts are commonly used in navigational mountain rivers to realize river channelization and communicate different water systems. However, the complicated water–gas–solid coupling process incurred during the water exit of cavities beneath a ship chamber can strongly affect the stability of the chamber and even affect the ship lift operation. In this study, the water exit behavior of a generalized cavity model was investigated using an experimental–numerical approach. Both the air pressure and flow patterns during the water exit process were analyzed. The results demonstrate three different types of air pressure process in cavity exits. Based on the results, a series of relationships are proposed to predict the maximum negative pressure incurred in the water exit process. Moreover, a method was developed to determine the optimum ported area of the cavity regarding the absence of additional hydrodynamic loads. Furthermore, a classification system to typify the flow patterns manifesting in the cavity is proposed. It was found that the transition from a slug flow to a drop flow could be determined as a transition coefficient K equal to 1. Full article
(This article belongs to the Special Issue Sustainable Hydrodynamic Modelling in Offshore and Ocean Engineering)
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20 pages, 9027 KiB  
Article
Shark Skin—An Inspiration for the Development of a Novel and Simple Biomimetic Turbulent Drag Reduction Topology
by Shaotao Fan, Xiangxi Han, Youhong Tang, Yiwen Wang and Xiangshao Kong
Sustainability 2022, 14(24), 16662; https://doi.org/10.3390/su142416662 - 13 Dec 2022
Cited by 1 | Viewed by 3645
Abstract
In this study, a novel but simple biomimetic turbulent drag reduction topology is proposed, inspired by the special structure of shark skin. Two effective, shark skin-inspired, ribletted surfaces were designed, their topologies were optimized, and their excellent drag reduction performances were verified by [...] Read more.
In this study, a novel but simple biomimetic turbulent drag reduction topology is proposed, inspired by the special structure of shark skin. Two effective, shark skin-inspired, ribletted surfaces were designed, their topologies were optimized, and their excellent drag reduction performances were verified by large eddy simulation. The designed riblets showed higher turbulent drag reduction behavior, e.g., 21.45% at Re = 40,459, compared with other experimental and simulated reports. The effects of the riblets on the behavior of the fluid flow in pipes are discussed, as well as the mechanisms of fluid drag in turbulent flow and riblet drag reduction. Riblets of various dimensions were analyzed and the nature of fluid flow over the effective shark skin surface is illustrated. By setting up the effective ribletted surface on structure’s surface, the shark skin-inspired, biomimetic, ribletted surface effectively reduced friction resistance without external energy support. This method is therefore regarded as the most promising drag reduction technique. Full article
(This article belongs to the Special Issue Sustainable Hydrodynamic Modelling in Offshore and Ocean Engineering)
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