A flow pattern independent drift flux model based void fraction correlation for a wide range of gas–liquid two phase flow

Bhagwat, Swanand M.; Ghajar, Afshin J.

doi:10.1016/j.ijmultiphaseflow.2013.11.001

Cited by 217 publications

(85 citation statements)

References 41 publications

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“…Therefore, the comparison was performed with this study. To compare this results presented by Franca, it was used the correlation developed by Bhagwat [30] and the details of this correlation can be found elsewhere. This void fraction correlation was selected above others (Woldesmayat), for the reason that it presents several advantages, as follows (Bhagwat):…”

Section: Comparison Against Experimental Data Available In Literaturementioning

confidence: 99%

Study of liquid–gas two-phase flow in horizontal pipes using high speed filming and computational fluid dynamics

López

Pineda

Bello

et al. 2016

Experimental Thermal and Fluid Science

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Section: Comparison Against Experimental Data Available In Literaturementioning

confidence: 99%

Study of liquid–gas two-phase flow in horizontal pipes using high speed filming and computational fluid dynamics

López

Pineda

Bello

et al. 2016

Experimental Thermal and Fluid Science

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“…A preliminary evaluation of existing flow-pattern-independent void fraction, frictional pressure drop, and nonboiling two-phase heat transfer correlations reveals that these correlations in general fail when used against the experimental data in stratified flow regime. The recent void fraction modeling work of Bhagwat and Ghajar [11] shows that their flow pattern-and pipe orientationindependent model accurately predicts the void fraction for all flow patterns except the stratified flow. On a similar note, Lips and Meyer [12] identified the shortcomings of the existing twophase flow models and justified a need of stratified flow patternspecific model to determine two-phase heat transfer coefficient in convective condensation in downward inclined tubes.…”

Section: Introductionmentioning

confidence: 96%

An Empirical Model to Predict the Transition Between Stratified and Nonstratified Gas–Liquid Two-Phase Flow in Horizontal and Downward Inclined Pipes

Bhagwat

Ghajar

2015

Heat Transfer Engineering

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The specific objective of this work is to develop an empirical model to predict the existence of stratified flow in horizontal and downward inclined gas-liquid two-phase flow. The proposed model is in nondimensional form and attempts to emulate the qualitative trend of the Taitel and Dukler mechanistic model. The key advantage of the proposed method is that it is explicit in nature and, unlike Taitel and Dukler, it does not require use of a graphical or iterative solution. The empirical parameters used in the proposed model account for the effect of pipe diameter, pipe orientation, and the liquid density on the transition line between stratified and nonstratified flow. The accuracy of the proposed model is verified against the flow visualization data collected from more than 16 data sources consisting of 8 fluid combinations, pipe diameter in a range of 8.9 to 300 mm, liquid density in a range of 780 to 1420 kg/m 3 , and all downward pipe inclinations including horizontal.

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“…The pattern of gas-liquid phase flow in horizontal pipes was studied with numerical simulation and experiments by Swanand M.Bhagwat et al [3]. Its simulation results were in agreement with the experimental results.…”

Section: Introductionmentioning

confidence: 83%

Effects of elbow structure of natural gas pipeline on condensation of water vapor

Gao¹,

Zhu²,

Wang³

et al. 2017

IJHT

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Condensation characteristics of gas pipelines containing little vapor in different elbows have been studied using a numerical calculation method. This is for the purpose of addressing the problem regarding condensed water corroding the inner wall of pipelines. Based on the condensation model of pipelines with low vapor content, the water vapor condensation process in a natural gas pipeline is simulated by UDF within Fluent software. Pipeline pressure simulated by Fluent is compared with the pressure calculated using the Friedel method. The error is less than 10%, which verifies the accuracy of the numerical simulation results. By analyzing non-uniformity distribution of the flow field caused by secondary circulation in different elbows, the simulation model was established to search for distribution of water vapor condensation in pipelines. The results show that the condensate distributions of water vapor in the elbow are non-uniform and mainly focus on the downstream of the inner elbow. Under the same conditions of flow rate and temperature difference of the inner and outer wall, condensation distribution in liquid phase on the inside elbow was compared at four different elbow angles such as 15°, 30°, 45° and 60°. The results indicate that maximum and minimum condensed vapor are separately generated at 15° and 60° elbow which can provide theoretical references for reducing the corrosion of natural gas pipelines.

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A flow pattern independent drift flux model based void fraction correlation for a wide range of gas–liquid two phase flow

Cited by 217 publications

References 41 publications

Study of liquid–gas two-phase flow in horizontal pipes using high speed filming and computational fluid dynamics

Study of liquid–gas two-phase flow in horizontal pipes using high speed filming and computational fluid dynamics

An Empirical Model to Predict the Transition Between Stratified and Nonstratified Gas–Liquid Two-Phase Flow in Horizontal and Downward Inclined Pipes

Effects of elbow structure of natural gas pipeline on condensation of water vapor

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