Results 11 to 20 of about 2,370 (195)

New Measurement Method of Oil-Water Two-Phase Flow with High Water Holdup and Low Rate by Phase State Regulation

open access: yesMeasurement Science Review, 2023
Flow rate and holdup are two essential parameters to describe oil-water two-phase flow. The distribution of oil-water two-phase flow in the pipeline is very uneven, and there is a significant slippage between the phases.
Han Lianfu   +3 more
doaj   +2 more sources

Gas holdup in a reciprocating plate bioreactor: Non-Newtonian - liquid phase [PDF]

open access: yesHemijska Industrija, 2002
The gas holdup was studied in non-newtonian liquids in a gas-liquid and gas-liquid-solid reciprocating plate bioreactor. Aqueous solutions of carboxy methyl cellulose (CMC; Lucel, Lučane, Yugoslavia) of different degrees of polymerization (PP 200 and PP ...
Naseva Olivera S.   +5 more
doaj   +2 more sources

A Newly Developed Empirical Predictive Model for the Dispersed Phase (DP) Holdup in Rotating Disc Contactors

open access: yesChemEngineering, 2021
Newly novel developed correlations were derived to predict the dispersed phase (DP) holdup in a rotating disc contactor (RDC) extraction column. DP holdup is one of the significant parameters in the design of liquid–liquid contactors and for calculating ...
Ayham M. I. Al-Rahawi   +6 more
doaj   +2 more sources

Numerical Simulation and Holdup Prediction of Oil-Water Two-Phase in Low Yield Shale Oil Near Horizontal Wells

open access: yesCejing jishu
The production of shale oil wells is typically low, and logging instruments such as the flow scanning imager (FSI) may exhibit poor turbine response in low-production wells, leading to measurement deviations and reduced interpretation accuracy.
QIN Honglong   +3 more
doaj   +2 more sources

Capacitive Phase Shift Detection for Measuring Water Holdup in Horizontal Oil–Water Two-Phase Flow

open access: yesSensors, 2018
In this paper, a phase shift detection system of flow impedance is designed based on a concave capacitance sensor (CCS). The flow impedance of oil–water stratified flow is investigated by establishing an equivalent circuit model and a finite ...
Hongxin Zhang   +4 more
doaj   +2 more sources

Impact of Solid Particle Concentration and Liquid Circulation on Gas Holdup in Counter-Current Slurry Bubble Columns

open access: yesFluids
In this study, in a three-phase reactor with a rectangular cross-section, the effects of liquid circulation rates and solid particle concentration on gas holdup and bubble size distribution (BSD) were investigated.
Sadra Mahmoudi, Mark W. Hlawitschka
doaj   +2 more sources

Effect of Surfactants on Gas Holdup in Shear-Thinning Fluids [PDF]

open access: yesInternational Journal of Chemical Engineering, 2017
In this study, the gas holdup of bubble swarms in shear-thinning fluids was experimentally studied at superficial gas velocities ranging from 0.001 to 0.02 m·s−1.
Shaobai Li, Siyuan Huang, Jungeng Fan
doaj   +2 more sources

Analysis of Conductance Probes for Two-Phase Flow and Holdup Applications [PDF]

open access: yesSensors, 2020
In this paper we perform an analysis of the conductance probes used in two-phase flow applications especially for two-phase flow tomography of annular flow, to measure the waves produced in the interface with different boundary conditions without perturbing the flow, and in addition we examine the holdup applications as measuring the average void ...
José Luis Muñoz-Cobo   +3 more
openaire   +5 more sources

Prediction of Dispersed Phase Holdup in the Kühni Extraction Column Using a New Experimental Correlation and Artificial Neural Network [PDF]

open access: yesIranian Journal of Oil & Gas Science and Technology, 2019
In this work, the dispersed phase holdup in a Kühni extraction column is predicted using intelligent methods and a new empirical correlation. Intelligent techniques, including multilayer perceptron and radial basis functions network are used in the ...
Mohsen Keshavarz   +3 more
doaj   +1 more source

CFD Modeling and Gas Holdup Measurement in Three-Phase Slurry Bubble Column [PDF]

open access: yesEngineering and Technology Journal, 2009
Gas-Liquid-Solid system as slurry in a reactor have a wide range of applications in industry, a slurry reactor is a vessel containing the catalyst suspended in a liquid phase.
Ali H. Jawad   +2 more
doaj   +1 more source

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