Article
Geology
Rebecca G. Englert, Stephen M. Hubbard, Matthieu J. B. Cartigny, Michael A. Clare, Daniel S. Coutts, Sophie Hage, John Hughes Clarke, Zane Jobe, D. Gwyn Lintern, Cooper Stacey, Daniela Vendettuoli
Summary: This study explores the formation and evolution of cyclic steps in deep-water sedimentary rocks through sedimentological and quantitative three-dimensional architectural analyses of modern and ancient datasets. It reveals similarities in deposit dimensions, facies, and architecture across different turbidite-dominated settings and timescales, shedding light on the stratigraphic expression of small-scale, sandy upslope-migrating bedforms on the seafloor.
Article
Geosciences, Multidisciplinary
Kai Boggild, David C. Mosher
Summary: This study focuses on the geomorphology of the glacial-fed NP-28 Channel in the Amundsen Basin of the Arctic Ocean, highlighting the latitudinal controls on turbidity current channel structure. Coriolis effects and glacial style of sediment input are identified as major factors influencing channel morphology.
Article
Environmental Sciences
Dicky Harishidayat, Emily Barnabas Kiswaka
Summary: This study combines wellbore interpretation and 3D seismic datasets to reveal the spatial evolution of submarine channels in the Frigg Field and their influence on sediment distribution. Sediment gravity flows followed various submarine channels and had a significant impact on sediment distribution.
ENVIRONMENTAL EARTH SCIENCES
(2023)
Article
Physics, Multidisciplinary
A. M. Saunders, C. Stan, K. K. Mackay, B. Morgan, J. A. K. Horwitz, S. J. Ali, H. G. Rinderknecht, T. Haxhimali, Y. Ping, F. Najjar, J. Eggert, H-S Park
Summary: Studying high-velocity particle-laden flow interactions is crucial for understanding natural phenomena, but experimental observations are limited. Observing interactions of ejecta microjets provides a new method to study particle streams.
PHYSICAL REVIEW LETTERS
(2021)
Article
Engineering, Multidisciplinary
Mehdi Fadaei, Forough Ameli, Seyed Hassan Hashemabadi
Summary: Various methods for multiphase flow metering were introduced in this study, including using Coriolis flow meter to measure gas-liquid average density and determining gas volume fraction by discharge coefficient of an orifice plate. The application of Orifice plate and Coriolis flow meters for gas-liquid flow metering was investigated, along with predicting gas volume fraction using a soft sensor. Among various computational intelligence methods, the 3-layer neural network performed the best with a mean square error of 0.91% and mean absolute percent error of 3%.
Article
Mechanics
Shaodong Wang, Hui Du, Gang Wei, Pai Peng, Pu Xuan, Guanjing Wang
Summary: The experimental study investigates the interaction between a mode-2 internal solitary wave and a horizontal transverse cylinder. The geometric structure and flow characteristics of the mode-2 ISW and its interaction with the cylinder are analyzed using various measurement techniques. The forces exerted by the mode-2 ISW on the cylinder are analyzed, and the reasons for the maximum horizontal and vertical loads are revealed.
Article
Biochemical Research Methods
Csanad Redei, Attila Felinger
Summary: This study investigates several factors affecting the variation of mass flow-rate in supercritical fluid chromatography (SFC), including different column configurations, experimental conditions, and disturbances introduced by injections. The results show that the mass flow-rate differs when measured at the inlet or the outlet of the column, and different columns exhibit different tendencies of variations.
JOURNAL OF CHROMATOGRAPHY A
(2022)
Article
Mathematics
Qixiang Li, Michal Feckan, JinRong Wang
Summary: In this paper, we studied the irrotational periodic equatorial surface travelling waves in flows taking into account Coriolis forces due to the Earth's rotation. The monotonicity of horizontal velocity and pressure gradient distribution was obtained through the physical structures of the problem itself and the maximum principles.
MONATSHEFTE FUR MATHEMATIK
(2022)
Article
Geosciences, Multidisciplinary
Shaoru Yin, Ed L. Pope, Lin Lin, Weifeng Ding, Jinyao Gao, Ziyin Wu, Chunguo Yang, Jiangxin Chen, Jiabiao Li
Summary: This study presents a new mechanism of turbidity current transformation from depositional to erosive in the South China Sea, resulting in the development of seafloor channels due to the confinement by seamounts and bedrock highs. The confinement increased flow competency and allowed the turbidity currents to carry larger volumes of coarse sediment, impacting basin-scale depositional patterns. These findings highlight the importance of pre-established basin topography in sedimentation processes.
Article
Astronomy & Astrophysics
Larry R. Lyons, Jiang Liu, Yukitoshi Nishimura, Ashton S. Reimer, William A. Bristow, Don L. Hampton, Xueling Shi, Roger H. Varney, Eric F. Donovan
Summary: Auroral observations and radar analysis have revealed that the intrusion of low entropy plasma through flow channels triggers substorm onset in the inner plasma sheet. These flow channels play a significant role in the onset of substorms, altering the entropy distribution within the plasma sheet and causing instability leading to auroral and electromagnetic wave growth.
JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
(2021)
Article
Mechanics
A. Posa, M. Felli, R. Broglia
Summary: The acoustic characteristics generated by a system consisting of a hydrofoil and a downstream propeller are investigated using the acoustic analogy method. The results show that the angle of incidence of the hydrofoil has a significant impact on the acoustic signature of the system. The nonlinear component of sound dominates at small radial coordinates near the wake, while the linear component of sound originates from the surface of the propeller and moves away along the radial direction. The shear between the wakes shed by the hydrofoil and the propeller plays an important role in enhancing the nonlinear sources of sound.
Article
Engineering, Geological
Jianting Du, Jiantao Yu, Clarence Edward Choi
Summary: Submarine debris flows pose a threat to offshore development. Existing experimental studies do not accurately simulate actual bed conditions, and recent experiments have shown that bed roughness and permeability play an important role in flow dynamics.
Article
Engineering, Mechanical
Marc MacDonald, Marc de Huu, Remy Maury, Oliver Buker
Summary: The performance of four Coriolis flow meters designed for use in hydrogen refuelling stations was evaluated under a wide range of conditions. Results showed that pressure did not significantly affect meter performance, but temperature had some impact. Errors were generally within +/- 1% when operated within recommended flow rate ranges and ambient temperatures, with errors within +/- 2% achievable when temperature effects were controlled.
FLOW MEASUREMENT AND INSTRUMENTATION
(2021)
Article
Thermodynamics
Sina M. Karbalaee, Pedram Hanafizadeh, Rashidoddin Attarpour, Mehdi Ashjaee
Summary: This study examines the effects of rotation on convective heat transfer coefficient, demonstrating that rotational buoyancy effects may be negligible under certain conditions, while in rib roughened channels, rotational buoyancy causes the reattachment point to occur closer to the upstream rib and reduces the enhancing effects of rotation.
THERMAL SCIENCE AND ENGINEERING PROGRESS
(2021)
Article
Astronomy & Astrophysics
Larry R. Lyons, Jiang Liu, Yukitoshi Nishimura, Chih-Ping Wang, Ashton S. Reimer, William A. Bristow, Don L. Hampton, Xueling Shi, Roger H. Varney, Eric F. Donovan
Summary: The brightening expansion of the substorm onset arc may represent the expansion of the substorm onset instability. Observations show enhanced flows that support the plasma sheet bubble modeling.
JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
(2021)
Article
Environmental Sciences
Tej Heer, Mathew G. Wells, Nicholas E. Mandrak
Summary: The hatching success of Asian carps in tributaries is influenced by temperature and flow, with higher success rates in scenarios with warmer water temperatures and moderate flow. The use of hydrodynamic modeling can help predict hatching success and guide preventative efforts.
JOURNAL OF GREAT LAKES RESEARCH
(2021)
Article
Engineering, Civil
Oliver Lojek, Jan Tiede, Jan Visscher, Remo Cossu, Torsten Schlurmann
JOURNAL OF WATERWAY PORT COASTAL AND OCEAN ENGINEERING
(2020)
Article
Engineering, Civil
Orrin Lancaster, Remo Cossu, Tom E. Baldock
COASTAL ENGINEERING
(2020)
Article
Engineering, Ocean
Orrin Lancaster, Remo Cossu, Sebastien Boulay, Scott Hunter, Tom E. Baldock
Summary: The study investigated the performance of a new, low-cost Spotter wave buoy in comparison with other instruments in measuring wave parameters at a wave energy candidate site in King Island, Tasmania. Results showed strong agreement between the Spotter buoy and RDI ADCP in key wave parameters, highlighting the suitability of the Spotter buoy for low-cost wave resource studies.
JOURNAL OF ATMOSPHERIC AND OCEANIC TECHNOLOGY
(2021)
Article
Energy & Fuels
Christelle Auguste, Philip Marsh, Jean-Roch Nader, Irene Penesis, Remo Cossu
Summary: This study investigates the sediment transport and large sand wave characteristics in Banks Strait, Tasmania, Australia, and finds that the migration of sand waves is influenced by parameters such as sediment sorting, bed friction, and residual current. The results provide insights for future tidal farms deployments in Banks Strait by understanding the dynamics of sediment variability.
Article
Environmental Sciences
Alistair Grinham, Nathaniel Deering, Ryan Beecroft, Jessica Rudd, Craig Heatherington, Remo Cossu, Michael Linde, Darren Richardson, Craig Wilson, Nicholas Hutley, Simon Albert
Summary: This study investigated the distribution of DDT and its metabolites in sediments of the Brisbane River over 15 years, and found significant increases in DDT, DDE, and DDD levels following major flood events. While elevated levels of these compounds were detected in sediment at 32 of 79 sites sampled, they generally remained below guideline trigger values. Major flood events and intensive cropping practices were identified as legacy sources contributing to the elevated DDE content in the lower reaches of the Brisbane River.
MARINE POLLUTION BULLETIN
(2021)
Article
Green & Sustainable Science & Technology
Christelle Auguste, Jean-Roch Nader, Philip Marsh, Remo Cossu, Irene Penesis
Summary: The study developed a sediment transport model using MIKE21/3 software to better understand sediment transport in coastal ecosystems. Results showed that both 2D and 3D approaches are useful, with 2D being sufficient for regional scale assessments and 3D allowing for closer examination of influences around tidal farms. Differences in sediment transport rates calculated using different formulas emphasize the need to evaluate sediment transport formulae with field data.
Article
Green & Sustainable Science & Technology
Philip Marsh, Irene Penesis, Jean-Roch Nader, Remo Cossu
Summary: Most tidal energy site studies focus on resource size, but Australian waters used a Multi-Criteria Evaluation process to consider various factors in site selection, identifying three promising locations for tidal turbine array deployments.
Article
Engineering, Marine
Craig Heatherington, Alistair Grinham, Irene Penesis, Scott Hunter, Remo Cossu
Summary: Marine renewable energy is still in its infancy and faces challenges due to harsh marine conditions. Reliable initial surveys are crucial for determining optimal deployment locations, while considering the impact of harsh marine environments on devices.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2021)
Article
Energy & Fuels
Peter Osman, Jennifer A. Hayward, Irene Penesis, Philip Marsh, Mark A. Hemer, David Griffin, Saad Sayeef, Jean-Roch Nader, Remo Cossu, Alistair Grinham, Uwe Rosebrock, Mike Herzfeld
Summary: Tidal energy has the potential to reduce the intermittency and variability of electricity supplied from solar and wind power farms, while also lowering the capital expenditure needed to improve dispatchability. Sharing energy storage between tidal stream power generators and wind or solar power generators can mitigate the level, frequency, and duration of power loss from wind or solar PV farms.
Article
Green & Sustainable Science & Technology
Remo Cossu, Irene Penesis, Jean-Roch Nader, Philip Marsh, Larissa Perez, Camille Couzi, Alistair Grinham, Peter Osman
Summary: The study found that Banks Strait channel has potential for tidal energy resources, with tidal currents generally not exceeding 2.5 m/s and maximum tidal kinetic power densities of approximately 0.85 kW/m(2). In-situ estimates suggest that setting up a tidal turbine farm in Banks Strait could bring significant energy advantages to the region.
Article
Green & Sustainable Science & Technology
P. Marsh, I. Penesis, J. R. Nader, C. Couzi, R. Cossu
Summary: The Clarence Strait in the Northern Territory of Australia has been identified as a region with potential for tidal energy, with high resolution models developed to assess feasibility and show considerable tidal resources suitable for Tidal Energy Convertor array installations. Results indicate a high Annual Energy Production potential of up to 108 GWh with minimal impact on current flow and surface elevations, making the region suitable for tidal energy farm development.
Article
Green & Sustainable Science & Technology
Larissa Perez, Remo Cossu, Alistair Grinham, Irene Penesis
Summary: The study investigates the impact of velocity fluctuations on tidal turbine blades caused by unsteady flows, which substantially increase mechanical loads and pose a major challenge for tidal energy converters. Turbulence and wave-turbulence interactions were quantified and characterized in two prospective tidal energy sites in Australia, providing valuable data for turbine performance and loadings estimates. The findings contribute towards establishing best-practice turbulence assessment methods in tidal energy sites.
Article
Engineering, Marine
Orrin Lancaster, Remo Cossu, Craig Heatherington, Scott Hunter, Tom E. Baldock
Summary: This study presents the first published measurements of scour and morphological change around an Oscillating Water Column (OWC) Wave Energy Converter (WEC) device at a real-world site. The study aims to provide insights for future designs to reduce costs of the technology. A 200-kW prototype OWC WEC was deployed in King Island, Australia and monitored using dive footage, multi-beam surveys, and bedrock surveys. Settlement of the device was observed and attributed to scour undermining the gravity structure's foundations. The study explores the processes causing scour and suggests design modifications to mitigate the risk of scour and settlement.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2022)
Correction
Engineering, Marine
Lee Y. Jun, Alexander L. Forrest, Fauzi A. Hardjanto, Chai Shuhong, Remo Cossu, Leong Q. Zhi
JOURNAL OF OCEAN ENGINEERING AND SCIENCE
(2021)