Results 61 to 70 of about 6,328 (265)

Towards a robust CFD model for aeration tanks for sewage treatment – a lab-scale study

Engineering Applications of Computational Fluid Mechanics, 2017
Detailed insight into the hydrodynamics of aeration tanks is of crucial importance for improvements in treatment efficiency, optimization of the process design and energy-efficient operation. These factors have triggered increasing interest in the use of
Anna M. Karpinska, John Bridgeman
doaj   +1 more source

Coprecipitation‐Enabled Scalable Synthesis of High‐Energy Density Polyanion‐Integrated Disordered Rocksalt Cathodes for Lithium‐Ion Batteries

Advanced Energy Materials, EarlyView.
A coprecipitation‐enabled solid‐state route enables scalable synthesis of the metastable polyanion‐integrated disordered rocksalt cathode, Li1.67Mn1.5P0.17O4, without mechanochemical phase formation or post‐synthesis pulverization. Coprecipitation establishes local Mn–P–O integration in the precursor, while eutectic LiOH/LiNO3‐assisted lithiation ...
Hsi Chen, Yung‐An Chen, Chen Chang, Frances M. Ross, Yimeng Huang, Ju Li   +5 more
wiley   +1 more source

Influence of atmospheric vertical wind and turbulence on noctilucent clouds

Frontiers in Astronomy and Space Sciences
Noctilucent clouds (NLCs), also called Polar Mesospheric Clouds (PMC), are high-altitude ice clouds in the summer mesopause region, mainly at polar latitudes.
Ashique Vellalassery, Gerd Baumgarten, Mykhaylo Grygalashvyly, Franz-Josef Lübken, Gokul Udayakumar, Gokul Udayakumar   +5 more
doaj   +1 more source

Turbulence Modeling Insights into Supercritical Nitrogen Mixing Layers

Energies, 2020
In Liquid Rocket Engines, higher combustion efficiencies come at the cost of the propellants exceeding their critical point conditions and entering the supercritical domain.
Leandro Magalhães, Francisco Carvalho, André Silva, Jorge Barata   +3 more
doaj   +1 more source

A stress‐balance‐based critical Weber number for droplets and bubbles

AIChE Journal, EarlyView.
Abstract Predicting droplet and bubble breakup in turbulent flows is critical for optimizing multiphase flow processes such as emulsification and atomization. Traditional models based on a fixed critical Weber number (Wec$$ {We}_c $$) may not capture interfacial‐stress dominance in low‐viscosity fluids or viscous resistance in high‐viscosity droplets ...
Supratim S. Dipta, Krishnamurthy Ravichandar, R. Dennis Vigil, Rodney O. Fox, Michael G. Olsen   +4 more
wiley   +1 more source

First Kinetic 3‐D Simulations of the High‐Latitude Electrojet Spanning an Entire Turbulent Flux Tube

Geophysical Research Letters
Radar and rocket observations of the terrestrial ionosphere frequently measure turbulent plasma waves, especially during geospace storms. The non‐linear behavior of these waves remains poorly characterized. This paper presents the first fully kinetic 3‐D
Meers Oppenheim, Y. Dimant, R. Koontaweepunya, A. Q. Green, S. Evans   +4 more
doaj   +1 more source

Lumped modeling of bubbling fluidized beds for high‐temperature processes

AIChE Journal, EarlyView.
Abstract Bubbling fluidized beds (BFBs) have been a source of study for multiple decades. Among other applications, they can be used as scalable reactors for the conversion of biomass and waste resources to fuels. Several experimental and computational studies have been devoted to correlating the interplay of hydrodynamics and heat and mass transfer in
Ravi Ramesh, Elyas Moghaddam, Wiebren de Jong, Johan T. Padding   +3 more
wiley   +1 more source

Exploring Experimental Isotope Scaling and Density Limit in Tokamak Transport

Plasma
As it turns out, both isotope scaling and density limits are phenomena closely linked to fluid closure. The necessity to include ion viscosity arises for both phenomena. Thus, we have added ion viscosity to our model. The experimental isotope scaling has
Jan Weiland, Tariq Rafiq, Eugenio Schuster   +2 more
doaj   +1 more source

Modelling of transport in homogeneous turbulence

Modélisation du transport en turbulence homogène La modélisation est essentielle pour comprendre et reproduire les phénomènes physiques dominants ayant lieu dans des écoulements turbulents naturels (atmosphériques, océaniques). En effet, la dynamique des écoulements géophysiques résulte d'interactions complexes à des échelles et ...
openaire   +2 more sources

Experimental and numerical study of liquid–liquid systems using the Euler–Lagrange/VOF approach

AIChE Journal, EarlyView.
Abstract Achieving stable liquid–liquid dispersions with controlled droplet size remains a challenge due to the complex interplay of dispersed phase viscosity, hydrodynamic conditions and interfacial interactions. This work presents a validated computational framework for droplet breakage and coalescence in liquid–liquid dispersions with variable ...
Pavel Krýsa, Vojtěch Koutník, Simon Kuhn, Miroslav Šoóš   +3 more
wiley   +1 more source