Article
Geosciences, Multidisciplinary
Lars Kint, Florian Barette, Koen Degrendele, Marc Roche, Vera Van Lancker
Summary: This study found that sand extraction caused seabed deepening, decrease in backscatter values, reduction in carbonate content, and increase in organic matter content. However, after the cessation of operations, the sediment characteristics showed signs of slowly returning to their original state.
FRONTIERS IN EARTH SCIENCE
(2023)
Editorial Material
Oceanography
Douglas A. George, Castelle Bruno, Mulligan Patrick Ryan
Summary: The study explores headland sediment bypassing by combining field observations, numerical modeling, and improved parametrization. It contributes to the understanding of littoral cell boundaries and the evolution of shorelines in the context of climate change.
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2022)
Article
Engineering, Civil
Antonio M. G. Lopes, Antonio H. S. N. Vicente, Omar H. Sanchez, Regina Daus, Herbert Koch
Summary: This study evaluates several available analytical wake models that correct the computed wind field by CFD as postprocessing tools. Validation was done using experimental SCADA data from an onshore wind farm with 8 wind turbines, analyzing computed velocity ratios relative to the upstream leading turbine in single and multiple wake situations.
JOURNAL OF WIND ENGINEERING AND INDUSTRIAL AERODYNAMICS
(2022)
Article
Engineering, Marine
Boris Radosavljevic, Hugues Lantuit, Christian Knoblauch, Nicole Couture, Ulrike Herzschuh, Michael Fritz
Summary: Increasing coastal erosion rates in the Arctic lead to a greater release of sediments and organic matter into the coastal zone. Research conducted on sediment samples from the nearshore area showed higher organic carbon content. The study suggests that degradation of organic matter and separation of carbon pools occur on land and continue in the nearshore zone.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2022)
Article
Thermodynamics
Guo-Wei Qian, Yun-Peng Song, Takeshi Ishihara
Summary: The study developed a control-oriented large eddy simulation (LES) code to predict wind turbine wake, and validated the results with both laboratory and utility-scale wind turbines. The simulation results showed good agreement with experimental data, demonstrating the effectiveness of the LES code in predicting wake dynamics for different scales of wind turbines.
Article
Engineering, Marine
Xiaogang Yang, Zhitao Yan, Hengren Fu, Lingzhi Wang, Eric Savory
Summary: This paper aims to develop a nonlinear mathematical model for the unsteady wake galloping forces (UWGF) acting on a circular cylinder in the wake of a fixed identical circular cylinder. Numerical simulations are conducted to obtain the synchronous unsteady aerodynamic lift forces and displacements of wake galloping at different Reynolds numbers. The proposed UWGF model, which combines the self-excited force and the vortex-induced force based on the spectra of the aerodynamic lift forces, is verified by experimental results and can calculate wake galloping responses better than the quasi-steady theory.
Article
Mechanics
Srikrishna Sahu, Arnab Chakraborty, Dalton Maurya
Summary: The goal of the research is to understand the physics of the primary liquid breakup process and its correlation with the evolution of spray characteristics in a rotary slinger atomizer. Experiments were conducted to visualize the liquid breakup structure at the slinger orifice exit and measure droplet size at different radial stations using advanced imaging techniques. The influence of Coriolis force on liquid accumulation and the variation of droplet size with rotational speed and feed rate were observed, with a theoretical analysis explaining the observed phenomena.
INTERNATIONAL JOURNAL OF MULTIPHASE FLOW
(2021)
Article
Thermodynamics
Zufen Luo, Xiande Fang, Yeqi Qin, Chong Li, Xiaohuan Li
Summary: This study investigates the influence of hypergravity on flow boiling heat transfer through experiments and data analysis. The results reveal that the heat transfer is enhanced when the turntable starts to turn, regardless of whether it is in single-phase flow or two-phase flow. Additionally, the heat transfer phenomena differ for different vapor qualities under low mass flux and low heat flux conditions.
APPLIED THERMAL ENGINEERING
(2022)
Article
Oceanography
Richard Styles, Gregg A. Snedden, S. Jarrell Smith, Duncan B. Bryant, Brandon M. Boyd, Joseph Z. Gailani, Brady Couvillion, Edward Race
Summary: The study highlights the importance of hydrodynamics in the maintenance of river deltas and the relationship between sediment concentration and shear stress. It also shows that hydrodynamics during summer vegetated conditions are more favorable for sediment formation, impacting the rate of delta progradation.
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2021)
Article
Chemistry, Analytical
Jihyeong Lee, Saebom Lee, Minki Lee, Ritesh Prakash, Hyejeong Kim, Gyoujin Cho, Jinkee Lee
Summary: In this study, the effects of Coriolis and Euler forces on the mixing performance during the acceleration and deceleration of a rotating disk in the mixing chamber were investigated numerically and experimentally. The study found that increasing the rotational velocity and period improves the mixing performance, and a substantial difference between Euler forces at different radii enhances the mixing performance.
Article
Astronomy & Astrophysics
Lile Wang, Xinyu Li
Summary: In this study, the dynamical antifriction effect in a binary system was investigated using global 3D hydrodynamic simulations. The simulations showed that a dense and slow outflow can lead to orbital expansion, and it was proved that the gravitational force converges quickly in binary scenarios.
ASTROPHYSICAL JOURNAL
(2022)
Article
Mechanics
Kan He, Guglielmo Minelli, Xinchao Su, Guangjun Gao, Sinisa Krajnovic
Summary: The study investigates the wake bi-stability of notchback Ahmed bodies through wind tunnel experiments and large eddy simulations (LES). It is found that rounding the roof's trailing edge of the body can suppress bi-stable wakes, with the effect depending on the Reynolds number (Re). Different wake behaviors, such as bi-stability, symmetrization, and stable asymmetric wake states, are observed at different Reynolds numbers. LES results confirm the wake asymmetry and symmetries at specific Reynolds numbers, showcasing the influence of wake suppression in the notchback region.
Article
Thermodynamics
Han-Ming Li, Lin Feng, Wan-Yuan Shi, Michael K. Ermakov
Summary: By investigating the linear stability of axisymmetric thermocapillary-buoyant-Coriolis flow, three types of flow instabilities were identified for different Taylor numbers. The sign of the temperature perturbation governs the mechanisms of the stationary and oscillatory instabilities, which are helpful for understanding the combined effects of thermocapillary force, buoyancy force, and Coriolis force on flow instabilities.
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
(2022)
Article
Physics, Multidisciplinary
Ankit Singh, P. Deepu
Summary: This study investigates the influence of the Coriolis effect on the linear stability of subaqueous dunes using a simple model based on the shallow water equations in a rotating frame of reference. New unstable modes are observed beyond a threshold value of the Coriolis parameter. Analytical results show variations in wave speed and growth rate of disturbances under different parameters, with the dunes becoming unstable when the Coriolis parameter exceeds a certain threshold.
Article
Mechanics
A. Posa
Summary: This study presents large-eddy simulations of a system consisting of a marine propeller and a downstream, infinite spanwise hydrofoil, compared with a similar hydrofoil of limited spanwise extent. The results show good agreement between the two cases with no incidence of the hydrofoil. However, as the incidence angle increases, the end effects become important. Accounting for the limited spanwise extent of the hydrofoil results in the generation of streamwise-oriented vortices, reduced spanwise elongation of the propeller wake, and lower turbulent stresses on the suction side of the hydrofoil.
Article
Engineering, Ocean
N. Michelet, N. Guillou, G. Chapalain, J. Thiebot, S. Guillou, A. J. Goward Brown, S. P. Neill
APPLIED OCEAN RESEARCH
(2020)
Review
Multidisciplinary Sciences
Jerome Thiebot, D. S. Coles, Anne-Claire Bennis, Nicolas Guillou, Simon Neill, Sylvain Guillou, Matthew Piggott
PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES
(2020)
Article
Multidisciplinary Sciences
Nicolas Guillou, Simon P. Neill, Jerome Thiebot
PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES
(2020)
Article
Green & Sustainable Science & Technology
Carlos Joel Mejia-Olivares, Ivan D. Haigh, Athanasios Angeloudis, Matt J. Lewis, Simon P. Neill
Article
Engineering, Ocean
Carlos Joel Mejia-Olivares, Ivan D. Haigh, Matt J. Lewis, Simon P. Neill
APPLIED OCEAN RESEARCH
(2020)
Article
Oceanography
Sophie L. Ward, James D. Scourse, Yusuke Yokoyama, Simon P. Neill
CONTINENTAL SHELF RESEARCH
(2020)
Article
Green & Sustainable Science & Technology
Matt Lewis, Rory O'Hara Murray, Sam Fredriksson, John Maskell, Anton de Fockert, Simon P. Neill, Peter E. Robins
Summary: The study utilized a standardized power curve and global tidal data for the prediction and assessment of tidal-stream energy resources. It was found that there is an optimal match between turbine rated speed and maximum current speed, but this varies in different scenarios. Optimization design for firm power can increase the capacity factor, impacted by tidal form and maximum current speed.
Article
Green & Sustainable Science & Technology
Michael Ridgill, Simon P. Neill, Matt J. Lewis, Peter E. Robins, Sopan D. Patil
Summary: This study aims to determine the theoretical global riverine hydrokinetic resource and finds that China, Russia, and Brazil have the greatest potential, while Bhutan, Nepal, and Tajikistan also show great potential. Hydrokinetic energy conversion can benefit isolated communities and has the potential to complement other forms of renewable energy technology to reduce energy poverty.
Article
Green & Sustainable Science & Technology
Simon P. Neill, Mark Hemer, Peter E. Robins, Alana Griffiths, Aaron Furnish, Athanasios Angeloudis
Summary: Australia has a significant tidal range resource, accounting for 22% of the global resource, with the potential to make a substantial contribution to the country's electricity generation. The Kimberley region of Western Australia, with its concentrated tidal range resource, presents an opportunity for renewable energy export.
Review
Green & Sustainable Science & Technology
Simon P. Neill, Kevin A. Haas, Jerome Thiebot, Zhaoqing Yang
Summary: The ocean contains a variety of renewable energy resources, little of which has been exploited. The review focuses on tidal range and tidal stream energy, covering various timescales relevant to tidal energy, from fortnightly and semi-diurnal variability to array and device-scale turbulence. Ways to reduce variability and uncertainties in turbulence predictions are discussed for future research directions.
JOURNAL OF RENEWABLE AND SUSTAINABLE ENERGY
(2021)
Review
Multidisciplinary Sciences
Daniel Coles, Athanasios Angeloudis, Deborah Greaves, Gordon Hastie, Matthew Lewis, Lucas Mackie, James McNaughton, Jon Miles, Simon Neill, Matthew Piggott, Denise Risch, Beth Scott, Carol Sparling, Tim Stallard, Philipp Thies, Stuart Walker, David White, Richard Willden, Benjamin Williamson
Summary: This review critically assesses the practical contribution tidal stream energy can make to the future energy mix of the UK and British Channel Islands. It provides evidence supporting a national-scale practical resource estimate and highlights the importance of economic competitiveness, environmental constraints, and whole-system cost benefits in determining the potential impact of tidal stream energy on the energy system.
PROCEEDINGS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES
(2021)
Article
Green & Sustainable Science & Technology
Michael Ridgill, Matt J. Lewis, Peter E. Robins, Sopan D. Patil, Simon P. Neill
Summary: Free-flowing rivers have been affected by human activities and extensive hydropower development. However, there are still opportunities for energy extraction in specific locations using hydrokinetic energy conversion, which can reduce the scale of operation and impact. By using global-scale river discharge data and high-resolution vectorized river networks, we estimated the global hydrokinetic potential based on the transfer of kinetic energy through the river network. The results show significant hydrokinetic potential in South America, Asia, and Africa.
JOURNAL OF RENEWABLE AND SUSTAINABLE ENERGY
(2022)
Article
Green & Sustainable Science & Technology
Simon P. Neill, Iain A. Fairley, Steven Rowlands, Saul Young, Tom Hill, Christopher A. Unsworth, Nicholas King, Michael J. Roberts, Martin J. Austin, Peter Hughes, Ian Masters, Aled Owen, Ben Powell, Dominic E. Reeve, Matthew J. Lewis
Summary: Test centres play a unique role in the marine renewable energy industry by facilitating real testing at sea for devices and components at various technology readiness levels. The META project in Wales consists of eight test areas and aims to systematically analyze and assess the collected datasets, providing valuable information for future testing and the development of evolving marine energy technologies.
Article
Environmental Sciences
Tim Jackson-Bue, Ally J. Evans, Peter J. Lawrence, Paul R. Brooks, Sophie L. Ward, Stuart R. Jenkins, Pippa J. Moore, Tasman P. Crowe, Simon P. Neill, Andrew J. Davies
Summary: This study investigated the influence of local physical structure on biotic assemblages at intertidal reef sites in Wales, UK. The results showed that local habitat structure had a significant impact on assemblage composition across regional environmental gradients. Artificial reefs had lower taxonomic richness and different physical structure compared to natural sites. Environmental variables and two metrics of physical structure together explained 40% of the variation in assemblage composition among sites, with the two structural metrics independently explaining 14.5% of the variation.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Energy & Fuels
J. McIlvenny, B. J. Williamson, I. A. Fairley, M. Lewis, S. Neill, I Masters, D. E. Reeve
Summary: This study tests two algorithms to derive flow velocity information from video data collected by unmanned aerial vehicles (UAVs) at tidal stream energy sites. Despite the underestimation issue in optical flow, the overall validation results suggest that this low-cost and low-risk data collection method has potential applications in tidal stream energy research.
INTERNATIONAL JOURNAL OF ENERGY AND ENVIRONMENTAL ENGINEERING
(2023)
