Results 11 to 20 of about 5,686,311 (231)

Modelling of transient gas-liquid flow and pigging in pipes [PDF]

open access: yes, 1999
More and more transient gas-liquid operations in pipes are being successfully applied in the oil and gas industry. Pigging in two-phase pipelines, to remove liquid accumulation or for cleaning purposes, is an important transient operation.
Lima, P. C. R.
core   +7 more sources

Gas-liquid plug flow liquid holdup measurement using semantic segmentation

open access: yes, 2021
Liquid holdup is one of the most important parameters of gas-liquid two-phase flow. Affected by the image noise, the traditional liquid holdup measurement method based on image processing is difficult to accurately extract the gas-liquid interface ...
Jingwen ZHAO   +4 more
core   +1 more source

Hydrodynamics and Mass Transfer in a Concentric Internal Jet-Loop Airlift Bioreactor Equipped with a Deflector

open access: yesEnergies, 2021
The gas–liquid hydrodynamics and mass transfer were studied in a concentric tube internal jet-loop airlift reactor with a conical bottom. Comparing with a standard design, the gas separator was equipped with an adjustable deflector placed above the riser.
Radek Šulc, Jan Dymák
doaj   +1 more source

Gas Holdup in Trayed Bubble Column Reactors [PDF]

open access: yes, 2006
The Sectionalization of Conventional Bubble Columns by Perforated Trays into Trayed Bubble Columns (TBCs) Has Much Potential in Biochemical and Petroleum Refining Processes, as an Effective Way to Improve the Gas-Liquid Contacting Efficiency and Reduce ...
Al-Dahhan, Muthanna H., Alvaré, Javier
core   +1 more source

Computational Investigation of Liquid Holdup and Wetting Efficiency Inside Trickle Bed Reactors with Different Catalyst Particle Shapes

open access: yesApplied Sciences, 2020
Liquid holdup and wetting efficiency are essential parameters for design of trickle bed reactors. Both parameters play an important role in reactor performance including pressure drop, conversion, and heat transfer.
Hao Deng   +4 more
doaj   +1 more source

Identification of Local Isotropic Turbulence Conditions in Various Bubble Columns Based on Several Reliable Parameters

open access: yesFluids, 2023
Bubble columns (BCs) are widely used in the chemical industry. In many industrial applications, these important gas-liquid contactors operate in a churn-turbulent flow regime.
Stoyan Nedeltchev
doaj   +1 more source

Gas holdup in a trayed cold-flow bubble column [PDF]

open access: yes, 2001
An Experimental Study Was Performed to Investigate the Effect of Sieve Trays on the Time-Averaged Gas Holdup Profiles and the overall Gas Holdup in a Cold-Flow Bubble Column that Was Scaled-Down from a Commercial Unit.
Leib, T. M.   +15 more
core   +1 more source

Pressure Drop Hysteresis of Hydrodynamic States in Packed Tower for Foaming Systems [PDF]

open access: yes, 2011
An experimental investigation was carried out to determine the effects of gas and liquid flow velocities and surface tension on the two-phase phase pressure drop a in a downflow trickle bed reactor. Water and non-Newtonian foaming solutions were employed
Sodhi, Vijay, Gupta, Renu
core   +2 more sources

An Explicit Analytical Solution for Transient Two-Phase Flow in Inclined Fluid Transmission Lines

open access: yesFluids, 2021
Due to the complex nonlinearity characteristics, analytical modeling of compressible flow in inclined transmission lines remains a challenge. This paper proposes an analytical model for one-dimensional flow of a two-phase gas-liquid fluid in inclined ...
Taoufik Wassar   +3 more
doaj   +1 more source

An Assessment of Drag Models in Eulerian–Eulerian CFD Simulation of Gas–Solid Flow Hydrodynamics in Circulating Fluidized Bed Riser

open access: yesChemEngineering, 2020
Accurate prediction of the hydrodynamic profile is important for circulating fluidized bed (CFB) reactor design and scale-up. Multiphase computational fluid dynamics (CFD) simulation with interphase momentum exchange is key to accurately predict the gas ...
Mukesh Upadhyay   +4 more
doaj   +1 more source

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