Results 1 to 10 of about 6,154 (303)

The Prediction of liquid holdup in horizontal pipe with BP neural network

open access: yesEnergy Science and Engineering, 2020
Liquid holdup is one of the most critical factors for the formation of pipe effusion, which is closely related to the efficiency of pipe transportation.
Rongge Xiao   +5 more
exaly   +2 more sources

Photoelectric Composite Three-Phase Flow Sensor for Complex Oil and Gas Wells [PDF]

open access: yesSensors
Reliable measurement of multiphase flow is fundamental to production evaluation in complex oil and gas wells. However, conventional sensors often suffer from low integration, limited measurement capability, and potential environmental impact.
Qiang Chen   +4 more
doaj   +2 more sources

Modelling and optimization of an existing onshore gas gathering network using PIPESIM [PDF]

open access: yesHeliyon
Pakistan has limited natural gas reserves, and most are found onshore. This article reports on the problems of an onshore gas gathering network (GGN) analysed through steady-state simulation modelling using PIPESIM software.
Iftikhar Ahmed   +6 more
doaj   +2 more sources

Characteristics of Bubbles and Gas Holdup In A Two-Phase Column For Different Liquid Phases [PDF]

open access: yesEngineering and Technology Journal, 2007
Experimental study of gas holdup (Eg), bubble diameter (dvs) interfacial area(a) m-1, small bubble rise velocity (Ubs), and bubble rise velocity (Ubr) in (0.1mi.d) and (1.5m) high column operated at ambient temperature and pressureconditions.
Auroba. Abdullah
doaj   +1 more source

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   +1 more source

The gas holdup in a multiphase reciprocating plate column filled with carboxymethylcellulose solutions [PDF]

open access: yesJournal of the Serbian Chemical Society, 2005
Gas holdup was investigated in a gas–liquid and gas–liquid-solid reciprocating plate column (RPC) under various operation conditions. Aqueous carboxymethylcellulose (sodium salt, CMC) solutions were used as the liquid phase, the solid phase was spheres ...
I. S. STAMENKOVIC   +5 more
doaj   +3 more sources

Influence of the geometry on the riser gas holdup in an external-loop airlift reactor: empirical and neural network modelling [PDF]

open access: yesActa Periodica Technologica, 2018
Experimental studies on the effect of geometrical characteristics (restriction orifice free area and sparger configuration) on the riser gas holdup of an external-loop airlift reactor have been conducted in this paper. The impact of the addition
Lukić Nataša Lj., Jokić Aleksandar I.
doaj   +1 more source

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   +1 more source

Three-dimensional CFD analysis of liquid slug acceleration and impact in a voided pipeline with end orifice

open access: yesEngineering Applications of Computational Fluid Mechanics, 2022
This research describes the dynamic behavior of an isolated slug driven by pressurized air in a voided line with an end orifice. A three-dimensional (3D) computational-fluid-dynamics (CFD) model is used to simulate the rapid propulsion and impact at the ...
Junling He   +6 more
doaj   +1 more source

Gas Holdup in Turbulent Bed Contactor: Experiments and Prediction Model [PDF]

open access: yesKemija u Industriji, 2022
Knowledge of gas holdup is important for the development of the three-phase fluidized bed reactors. This work concerns the study of the effect of different operating conditions on gas retention in a turbulent bed contactor type 2 (TBC), such as ...
Bensaber Bensebia   +2 more
doaj   +1 more source

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