Results 51 to 60 of about 937,889 (392)

Symmetry Approach in the Evaluation of the Effect of Boundary Proximity on Oscillation of Gas Bubbles

open access: yesFluids, 2018
The purpose of the present review is to describe the effect of an interface between media with different mechanical properties on the acoustic response of a gas bubble.
Alexey Maksimov
doaj   +1 more source

A Particle-Scale Model of Surface Tension for Two-Phase Flow: Model Description and Validation

open access: yesEnergies, 2022
A particle-scale surface tension force model (STF) is proposed here to be incorporated in the smoothed hydrodynamics particle (SPH) method. This model is based on the identification of interface geometry and the gradient of densities across the interface.
Xiaoxi Zhang   +7 more
doaj   +1 more source

Acoustics of Bubble Arrays: Role Played by the Dipole Response of Bubbles

open access: yesFluids, 2018
A model for acoustic transmission through a 2D square crystal of R-radius bubbles with a lattice constant L was previously proposed. Assuming a purely monopole response of the bubbles, this model offers a simple analytical expression of the transmission.
Valentin Leroy   +4 more
doaj   +1 more source

Gravitational waves from bubble dynamics: beyond the envelope [PDF]

open access: yesJournal of Cosmology and Astroparticle Physics, 2017
We study gravitational-wave production from bubble dynamics (bubble collisions and sound waves) during a cosmic first-order phase transition with an analytic approach.
Ryusuke Jinno, M. Takimoto
semanticscholar   +1 more source

Bubble dissolution in horizontal turbulent bubbly flow in domestic central heating system [PDF]

open access: yes, 2013
In a domestic central heating system, the phenomenon of microbubble nucleation and detachment on the surface of a boiler heat exchanger finds its origins in the high surface temperature of the wall and consequential localised super saturation ...
Brunel University   +4 more
core   +1 more source

Gas–Liquid Mass Transfer around a Rising Bubble: Combined Effect of Rheology and Surfactant

open access: yesFluids, 2021
The influence of viscosity and surface tension on oxygen transfer was investigated using planar laser-induced fluorescence with inhibition (PLIF-I). The surface tension and the viscosity were modified using Triton X-100 and polyacrylamide, respectively ...
Gaelle Lebrun   +4 more
doaj   +1 more source

Single-bubble and multi-bubble cavitation in water triggered by laser-driven focusing shock waves

open access: yes, 2018
In this study a single laser pulse spatially shaped into a ring is focused into a thin water layer, creating an annular cavitation bubble and cylindrical shock waves: an outer shock that diverges away from the excitation laser ring and an inner shock ...
De Colle, F.   +7 more
core   +1 more source

Analysis of the characteristic lengths in the bubble and slug flow regimes generated in a capillary T-junction [PDF]

open access: yes, 2016
We present an analysis of the geometry of the continuous and disperse phases in the bubble and slug flow regimes in air–water mixtures generated in a capillary T-junction of 1 mm internal diameter.
Arias Calderón, Santiago   +1 more
core   +2 more sources

Housing Bubbles [PDF]

open access: yesSSRN Electronic Journal, 2008
We use the notion of a housing bubble as an equilibrium in which some investors hold houses for resale purposes only and not with the expectation of receiving a dividend, either in the form of rent or utility. We show that an economy with looser collateral constraints is less prone to bubbles, which, in turn, have smaller size, but are more fragile in
Arce, Oscar, López-Salido, J David
openaire   +5 more sources

Study on Bubble Absorption Characteristics of R134a-DMF in Vertical Tube

open access: yesZhileng xuebao, 2022
To study the heat and mass transfer characteristics of an R134a-DMF (Dimethylformamide) bubble absorption process in a vertical tube, an experimental device for bubble absorption in a vertical tube was fabricated, and a mathematical model of heat and ...
Kong Xiangqiang, Li Huazhao, Li Jianbo
doaj  

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