Helium-filled soap bubbles for vortex core velocimetry
Sign Up to like & getrecommendations! Published in 2017 at "Experiments in Fluids"
DOI: 10.1007/s00348-017-2415-x
Abstract: Velocity measurements within the core of high-swirl vortices are often hampered by heavier-than-air particle tracers being centrifuged outside the vortex core region. The use of neutrally buoyant and lighter-than-air tracers is investigated to aim at… read more here.
Keywords: vortex core; soap; core; air ... See more keywords
Numerical and Experimental Study of the Meniscus Vortex Core in a Water Model of Continuous Casting Mold
Sign Up to like & getrecommendations! Published in 2020 at "Metallurgical and Materials Transactions B"
DOI: 10.1007/s11663-020-02006-4
Abstract: Slag entrainments in a continuous casting mold result in serious defects in steel products. Most previous studies concentrated on the magnitude of meniscus velocity or transient roll cell motion to investigate the cause of slag… read more here.
Keywords: vortex core; meniscus vortex; study; continuous casting ... See more keywords
Analysis of vortex core generation in pipe flows under different Reynolds number conditions
Sign Up to like & getrecommendations! Published in 2021 at "Journal of The Brazilian Society of Mechanical Sciences and Engineering"
DOI: 10.1007/s40430-021-03007-3
Abstract: Pipe flow is a well-documented case widely studied in both theoretical and practical applications. The present work aims at studying the influence of the Reynolds number on turbulent vortex distribution using Large Eddy Simulations (LES).… read more here.
Keywords: number; vortex core; reynolds number; pipe ... See more keywords
A Liutex based definition and identification of vortex core center lines
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Hydrodynamics"
DOI: 10.1007/s42241-019-0048-7
Abstract: Six core issues for vortex definition and identification concern with (1) the absolute strength, (2) the relative strength, (3) the rotational axis, (4) the vortex core center, (5) the vortex core size, and (6) the… read more here.
Keywords: definition; core; core center; vortex core ... See more keywords
Liutex (vortex) core definition and automatic identification for turbulence vortex structures
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Hydrodynamics"
DOI: 10.1007/s42241-019-0066-5
Abstract: As a milestone research in vortex identification (VI), the physical quantity of Liutex, including its forms of scalar, vector and tensor, was systematically explored and rigorously obtained as the third-generation (3G) of the vortex definition… read more here.
Keywords: turbulence vortex; vortex core; identification; vortex structures ... See more keywords
Periodic vortex core switching in curved magnetic nanodisk
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Magnetism and Magnetic Materials"
DOI: 10.1016/j.jmmm.2020.166481
Abstract: Abstract Periodic switching of magnetic vortex core driven by alternative magnetic field, applied perpendicularly, is investigated in a curved permalloy nanodisk by using micromagnetic simulation. Modulated by the curvature, the oscillations of the out-of-plane magnetization,… read more here.
Keywords: vortex core; periodic vortex; nanodisk; core switching ... See more keywords
Orbit-like trajectory of the vortex core in ferrimagnetic dots close to the compensation point
Sign Up to like & getrecommendations! Published in 2020 at "Results in physics"
DOI: 10.1016/j.rinp.2020.103598
Abstract: Abstract In physics, conserved quantities are key to understand and describe physical phenomena. These conserved quantities are related to Noether’s theorem and Lagrangian description in both classical mechanics and field theory. In this article we… read more here.
Keywords: vortex core; close compensation; compensation point; core ... See more keywords
Helical vortex core dynamics and flame interaction in turbulent premixed swirl combustion: A combined experimental and large eddy simulation investigation
Sign Up to like & getrecommendations! Published in 2019 at "Physics of Fluids"
DOI: 10.1063/1.5065508
Abstract: In this study, a combined experimental and Large Eddy Simulation (LES) investigation is performed to identify the vortical structures, their dynamics, and interaction with a turbulent premixed flame in a swirl-stabilized combustor. Our non-reacting flow… read more here.
Keywords: large eddy; vortex core; flame; eddy simulation ... See more keywords
Formation and evolution of vortex breakdown consequent to post design flow increase in a Francis turbine
Sign Up to like & getrecommendations! Published in 2024 at "Physics of Fluids"
DOI: 10.1063/5.0187104
Abstract: Draft tube flow instability encountered under off-design operating conditions in hydraulic turbines significantly limits their operational flexibility. The instability arises consequent to a higher than threshold swirl content in the runner outflow and leads to… read more here.
Keywords: turbine; vortex breakdown; draft tube; enlarged vortex ... See more keywords
The impact of operating temperatures on the fluctuating flow field and precessing vortex core in cyclone separator using large-eddy simulations
Sign Up to like & getrecommendations! Published in 2024 at "Physics of Fluids"
DOI: 10.1063/5.0195382
Abstract: The present study evaluates numerically the impact of the operating temperature of gas on the cyclone performance viz. the pressure drop, collection efficiency, and flow field details at an inlet velocity, Uin=15 m/s. The gas temperature… read more here.
Keywords: flow field; impact operating; large eddy; cyclone ... See more keywords
Nanocavity-Mediated Fast Magnetic Vortex Core In-Situ Switching by Local Magnetic Field
Sign Up to like & getrecommendations! Published in 2021 at "Chinese Physics Letters"
DOI: 10.1088/0256-307x/38/12/127501
Abstract: Fast in situ switching of magnetic vortex core in a ferromagnetic nanodisk assisted by a nanocavity, with diameter comparable to the dimension of a vortex core, is systematically investigated by changing the strength as well… read more here.
Keywords: field; vortex core; magnetic field; magnetic vortex ... See more keywords