Results 21 to 30 of about 737,901 (297)

The Month-of-the-Year Effect in the European, American, Australian and Asian Markets

open access: yesEconomies, 2021
This paper examines the existence of the month-of-the-year effects in four different continents, namely Europe, Asia, America, and Oceania. Nine indexes were analyzed in order to verify differences between monthly returns from January 1990 to December ...
Gualter Couto   +3 more
doaj   +1 more source

Shapes and Rise Velocities of Single Bubbles in a Confined Annular Channel: Experiments and Numerical Simulations

open access: yesFluids, 2021
Shapes and rise velocities of single air bubbles rising through stagnant water confined inside an annular channel were investigated by means of experiments and numerical simulations.
Andrea Cioncolini, Mirco Magnini
doaj   +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

Numerical Simulation Research of Bubble Characteristics and Bubble Departure Diameter in Subcooled Flow Boiling

open access: yesMathematics, 2022
Three-dimensional subcooled flow boiling of R134a in a horizontal tube was simulated by a VOF (volume of fluid) model combined with the level set method.
Jinfeng Wang   +5 more
doaj   +1 more source

Observations and scaling of travelling bubble cavitation [PDF]

open access: yes, 1995
Recent observations of growing and collapsing bubbles in flows over axisymmetric headforms have revealed the complexity of the ‘micro-fluid-mechanics’ associated with these bubbles (van der Meulen & van Renesse 1989; Briancon-Marjollet et al.
Brennen, C. E.   +2 more
core   +1 more source

First Observational Tests of Eternal Inflation: Analysis Methods and WMAP 7-Year Results [PDF]

open access: yes, 2011
In the picture of eternal inflation, our observable universe resides inside a single bubble nucleated from an inflating false vacuum. Many of the theories giving rise to eternal inflation predict that we have causal access to collisions with other bubble
A. Aguirre   +8 more
core   +2 more sources

Numerical Investigation of Helium Bubble Rising Behavior in Cross-Type Channel

open access: yesFrontiers in Energy Research, 2020
In a certain nuclear reactor, the coolant channel is a cross-type channel. There is little research about bubble rising behavior in this kind of channel, but the neutron detection would be affected by the bubbles.
Chunjie Zeng   +7 more
doaj   +1 more source

Effect of the Inclined Part Length of an Inclined Blade on the Cavitation Characteristics of Vortex Pumps

open access: yesMachines, 2022
To study the effect of the length of the second inclined section of the inclined vane on the vortex structure and pressure distribution inside a vortex pump, this paper uses a combination of numerical simulations (CFD) and experimental verification ...
Zhuofan Yin   +7 more
doaj   +1 more source

Stages of steady diffusion growth of a gas bubble in strongly supersaturated gas-liquid solution

open access: yes, 2009
Gas bubble growth as a result of diffusion flux of dissolved gas molecules from the surrounding supersaturated solution to the bubble surface is studied. The condition of the flux steadiness is revealed.
A. E. Kuchma   +20 more
core   +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

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