Results 51 to 60 of about 4,167,890 (151)

Fragmentation in turbulence by small eddies

open access: yesNature Communications, 2022
The classical framework of bubble fragmentation in turbulence usually only considers eddies of the bubble size. The authors present an experimental evidence that bubbles can be broken by the eddies of various sizes, supported by analytical model that ...
Yinghe Qi   +5 more
doaj   +1 more source

Bubble formation at two adjacent submerged orifices in inviscid fluids [PDF]

open access: yes, 2008
A theoretical model has been developed as an extension of single orifice bubble formation to investigate the growth and detachment of vapor/gas bubbles formed at two adjacent submerged orifices in inviscid fluids.
Arebi, Bashir H., Dempster, W.
core   +3 more sources

Experimental Investigation of Bubble Generation via Gas Injection Through Submerged Needles [PDF]

open access: yesJournal of Applied Fluid Mechanics
The size of bubbles is a crucial parameter in gas-liquid bubbly systems, making the investigation of bubble formation essential for effective bubble size control. The authors experimentally examined bubble generation using a high-speed video camera. They
M. J. Pang, M. H. Zhao, M. Jia
doaj   +1 more source

Measurements of sub-surface bubble populations and the modelling of air-sea gas flux

open access: yes, 2010
Bubbles, formed by breaking waves, play an important role in the transfer of gases between the Earth’s oceans and atmosphere and have been shown to increase the flux of gases during periods of heightened sea state.
Coles, David Geoffrey Hallstaff
core   +1 more source

Advances in theoretical and experimental methods of bubble-particle turbulent detachment in flotation

open access: yesMeitan xuebao
Flotation is an effective method to improve the quality of fine minerals and coal, but the separation process exhibits significant size effects. The bubble-particle detachment caused by turbulence is the main reason for the upper limit of separation ...
Shihao DING   +5 more
doaj   +1 more source

Numerical Simulation of Poly-Dispersed Bubbly Flow Using a Multi-Fluid Model

open access: yesJournal of Fluid Science and Technology, 2007
Numerical methods for predicting poly-dispersed bubbly flows in bubble columns are indispensable in the design of bubble column reactors. The objectives of the present study are (1) to experimentally investigate the effects of a bubble size distribution ...
Munenori MAEKAWA   +3 more
doaj   +1 more source

Analysis of bubble distribution in a multiphase rotodynamic pump

open access: yesEngineering Applications of Computational Fluid Mechanics, 2019
Recent researches show that the pressure increment of a multiphase pump is affected by bubble size and distribution. In order to study the bubble distribution characteristics in such pumps, a novel approach describing the variable bubble size in the pump
Yongjiang Li   +4 more
doaj   +1 more source

The pseudo-homogeneous flow regime in large-scale bubble columns: experimental benchmark and computational fluid dynamics modeling

open access: yesPetroleum, 2019
A precise prediction of the fluid dynamics in bubble columns is of fundamental importance to correctly design “industrial-scale” reactors. It is known that the fluid dynamics in bubble columns is related to the prevailing bubble size distribution ...
Giorgio Besagni   +3 more
doaj   +1 more source

Experiments and modelling of a draft tube airlift reactor operated at high gas throughputs [PDF]

open access: yes, 2013
One-dimensional modelling of global hydrodynamics and mass transfer is developed for an annulus sparged draft tube airlift reactor operating at high gas throughputs.
Colombet, Damien   +3 more
core   +1 more source

Method for Detecting Underwater Microbubbles Using Dual-Mode Fusion of Laser Polarization

open access: yesApplied Sciences
Bubble detection in water plays important roles in human exploration and management of the ocean. This research presents a detection technique based on laser polarization dual-mode fusion, aiming at solving the difficulties of light scattering intensity ...
Siguang Zong   +2 more
doaj   +1 more source

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