Results 11 to 20 of about 1,273 (263)

Experimental and Numerical Study of the Flow and Heat Transfer in a Bubbly Turbulent Flow in a Pipe with Sudden Expansion

open access: yesEnergies, 2019
The flow patterns and heat transfer of a downstream bubbly flow in a sudden pipe expansion are experimentally and numerically studied. Measurements of the bubble size were performed using shadow photography.
Pavel Lobanov   +2 more
doaj   +1 more source

Experimental Study of Bubbly-Slug Flow Transition Criteria in an Vertical Circular Tube by Using WMS

open access: yesFrontiers in Energy Research, 2020
Two-phase flow is an important and common phenomenon in reactor systems, and there are significant differences in the heat and mass transfer characteristics of two-phase flow under different flow patterns.
Shimo Yu   +6 more
doaj   +1 more source

The Fluidization Backwash Method of Filter Beds by Air-water Bubbly Flow

open access: yesJournal of Water and Environment Technology, 2020
A novel fluidization backwash method by the air-water bubbly flow with air bubbles of various sizes has been proposed for rapid filters. The backwash efficiency is closely related to the bubble wake motion.
Masao Kuroda   +4 more
doaj   +1 more source

Energy spectra of buoyancy-driven bubbly flow in a vertical Hele-Shaw cell

open access: yesFrontiers in Physics, 2023
We present direct numerical simulations (DNS) study of confined buoyancy-driven bubbly flows in a Hele-Shaw setup. We investigate the spectral properties of the flow and make comparisons with experiments.
Rashmi Ramadugu   +2 more
doaj   +1 more source

Karakterisitik Flow Patern Pada Aliran Dua Fase Gas-Cairan Melewati Pipa Vertikal

open access: yesJurnal Teknik Industri, 2012
Multi-phase flows are widely encountered in several engineering and industrial facilities, such as conventional steam power  plants, evaporators and condensers, pressurized-water nuclear reactors, a wide variety of petroleum industries, chemicals and ...
Priyo Heru Adiwibowo
doaj   +1 more source

Bubbles and Capital Flows [PDF]

open access: yesSSRN Electronic Journal, 2002
This paper presents a stylized model of international trade and asset price bubbles. Its central insight is that bubbles tend to appear and expand in countries where productivity is low relative to the rest of the world. These bubbles absorb local savings, eliminating inefficient investments and liberating resources that are in part used to invest in ...
openaire   +6 more sources

Experimental Study on Variations in Behavior of Green Water and Flow Kinematics on Deck with Various Flare Angles

open access: yes한국해양공학회지, 2018
In this study, a series of experiments were performed to investigate the variations in the behavior of green water generation and the flow kinematics of bubbly flow on deck with various flare angles.
Gang Nam Lee   +3 more
doaj   +1 more source

Slug Regime Transitions in a Two-Phase Flow in Horizontal Round Pipe. CFD Simulations

open access: yesApplied Sciences, 2020
The main objective of the study is to propose a technical solution integrated into the pipeline for the transition of the flow regime from slug to bubbly two-phase flow.
Vitaly Sergeev   +4 more
doaj   +1 more source

Analysis of Fluid-Structure Coupling Vibration Characteristics of Pipeline Transporting Bubbly Fluid Medium: With Application to Luxury Passenger Ship Life Area Pipeline

open access: yesShock and Vibration, 2023
When pipelines are transporting bubbly fluid medium, due to the coalescence and breakage behaviours of the bubbles, the pressure distribution at the wall is not uniform and the structure response is more complex.
Chen Chen, Hong Zhou, Lei Zhang
doaj   +1 more source

Vortex Simulation of the Bubbly Flow around a Hydrofoil

open access: yesInternational Journal of Rotating Machinery, 2007
This study is concerned with the two-dimensional simulation for an air-water bubbly flow around a hydrofoil. The vortex method, proposed by the authors for gas-liquid two-phase free turbulent flow in a prior paper, is applied for the simulation.
Tomomi Uchiyama, Tomohiro Degawa
doaj   +1 more source

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