Article
Engineering, Civil
Bo Gai, Jian Sun, Binliang Lin, Yuanyi Li, Chenxi Mi, Tom Shatwell
Summary: By integrating ecological and hydrodynamic factors, this study reveals the importance of vertical mixing and horizontal advection in driving phytoplankton blooms in Xiangxi Bay. The findings suggest a potential dam operation strategy to mitigate blooms and improve management of riverine reservoirs.
JOURNAL OF HYDROLOGY
(2023)
Article
Engineering, Civil
Elisabeta Cristina Timis, Michael George Hutchins, Vasile Mircea Cristea
Summary: The present research aims to predict the transport of phosphorus compounds in river stretches and explore their relation to controlling factors by developing an original approach called ADModel-P. The study found that resuspension is the largest contributor to the variability of organic phosphorus, while adsorption-desorption are the largest contributors to the variability of soluble reactive phosphorus. In addition, the conversion of inorganic to organic forms was found to be important. The findings are valuable for understanding in-stream processes and determining the dominant source/sink processes.
JOURNAL OF HYDROLOGY
(2022)
Article
Environmental Sciences
Ming Sheng Ng, Aaron Teo, Peter A. Todd
Summary: Anthropogenic sedimentation is a major cause of declining coral cover worldwide. This study installed sediment traps at different heights above the substrate and found variations in sediment characteristics with increasing trap mouth height. These findings have implications for coral ecology and the standardization of sediment collection protocols.
MARINE POLLUTION BULLETIN
(2022)
Review
Environmental Sciences
Ali Malli, Elena Corella-Puertas, Carla Hajjar, Anne-Marie Boulay
Summary: This article reviews the transport mechanisms and factors influencing the fate of microplastics in estuaries. The concentration of microplastics varies temporally and spatially, and wind direction and intensity impact their distribution. Estuaries act as temporary sinks for microplastics before being flushed to the ocean.
MARINE POLLUTION BULLETIN
(2022)
Article
Environmental Sciences
Honglong Yang, Chao Lu, Yuanyuan Hu, Pak-Wai Chan, Lei Li, Li Zhang
Summary: Based on the observation data of 2020, this study evaluated the daily variation in O-3 in Shenzhen and focused on the characteristics of nocturnal ozone pollution. The findings revealed frequent nocturnal peaks in winter and spring, and a close association between nocturnal O-3 pollution and horizontal transport and vertical mixing.
Article
Biodiversity Conservation
Yuting Li, Zhiyao Song, Ruijie Li, Peng Chen, Xiufeng Quan
Summary: This study aims to propose a new method and model to improve the accuracy of suspended sediment concentration (SSC) in estuarine and coastal waters. The model, based on hydrodynamic factors, functional principles, and dimensional evaluation methods, can analyze the effects of horizontal convective transport and vertical suspended upward movement on SSC.
ECOLOGICAL INDICATORS
(2023)
Article
Geosciences, Multidisciplinary
S. N. Tulich
Summary: The eastward propagation of the MJO depends on the effects of horizontal moisture advection, with the importance of two types of circulation anomalies, namely those of the MJO and those of embedded Rossby-type eddies. A novel approach quantifies the relative importance of the eddies by defining them as the residual of a least-squares fit to an observed bivariate MJO index. The results show that the eddies play a leading role in promoting the MJO's eastward propagation in terms of moisture.
GEOPHYSICAL RESEARCH LETTERS
(2023)
Article
Mechanics
Regis Turuban, Henri Lhuissier, Bloen Metzger
Summary: This paper investigates the effects of complex advection in a sheared suspension on the mixing process, showing that the stretching, folding, and overlapping of fluid at different timescales have a significant impact on mixing, eventually leading to the homogenization of dye distribution.
JOURNAL OF FLUID MECHANICS
(2021)
Article
Oceanography
Preston Spicer, Kelly L. Coles, Kimberly Huguenard, Daniel G. MacDonald, Michael M. Whitney
Summary: This study examines the influence of variable winds on mixing in river plumes. The results show that moderate northward winds can effectively decrease stratification and enhance advection and dissipation in the plume.
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2022)
Article
Chemistry, Physical
Kotaro Oshima, Natsuki Sato, Kentaro Nakamura, Haixin Guo, Richard Lee Smith
Summary: This study examines the settling characteristics of nanoparticles in water and cyclohexane through simulation and visualization methods. The model used in this study accurately represents the settling behavior of SiO2 nanoparticles in water, but the settling of C10CeO2 nanoparticles in cyclohexane is more complex.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Engineering, Civil
Timothy J. Randle, Gregory L. Morris, Desiree D. Tullos, Frank H. Weirich, G. Mathias Kondolf, Daniel N. Moriasi, George W. Annandale, Jon Fripp, J. Toby Minear, David L. Wegner
Summary: The hydrologic cycle is a renewable resource but water delivery is highly variable. Reservoir storage capacity used for flow regulation is steadily being lost to sedimentation, making the nation dependent on a non-sustainable resource. Preserving existing reservoir storage capacity is crucial to meet rising demands associated with population growth and climate change, and to avoid the challenges and costs of expanding existing capacity or developing new storage capacity.
JOURNAL OF HYDROLOGY
(2021)
Article
Environmental Sciences
Sun Min Choi, Jun Young Seo, Seong Woon Jeong, Moo Joon Lee, Ho Kyung Ha
Summary: The study revealed that the rapid growth of Spartina on the tidal flat led to the complexity of the salt marsh zone, affecting hydrodynamics and sediment processes. The stems and leaves could effectively trap fine-grained sediments, resulting in significant differences in bed elevation between the two sites. Flocculation of suspended sediments in Spartina communities was mainly controlled by stem-scale turbulence.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Energy & Fuels
Shuai Yuan, Bingyan Jiang, Tao Peng, Mingyong Zhou, Dietmar Drummer
Summary: Achieving rapid mixing of different liquids in a short distance is crucial for biochemical applications. A new type of micromixers consisting of double symmetrical V-shaped baffles and double asymmetrical V-shaped baffles is proposed, which can achieve high mixing efficiency. The performance of the micromixers varies at different Reynolds numbers, with better performance of the symmetrical baffles at low Reynolds numbers and better performance of the asymmetrical baffles at high Reynolds numbers.
CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION
(2022)
Article
Meteorology & Atmospheric Sciences
Oussama Romdhani, Jun A. Zhang, Mostafa Momen
Summary: This study assesses the accuracy and deficiencies of existing turbulence models in hurricane forecasts and explores the impact of turbulence mechanisms on hurricane flow. The results show that the existing horizontal diffusion parameterizations are overly dissipative for hurricane flows, indicating the need to improve turbulence parameterizations in models for better prediction accuracy.
JOURNAL OF ADVANCES IN MODELING EARTH SYSTEMS
(2022)
Article
Physics, Fluids & Plasmas
Monica Basilio Hazas, Francesca Ziliotto, Massimo Rolle, Gabriele Chiogna
Summary: This study provides experimental evidence of the relationship between mixing and flow field topology in porous media. The model-based interpretation shows that changes in boundary conditions can affect mixing dynamics and Shannon entropy of tracer distribution. Despite variations in hydrodynamic dispersion coefficients, the mixing dynamics remain stable due to control by the Okubo-Weiss parameter.