CFD simulation of interfacial instability from the nozzle in the formation of viscous core-annular flow

Manuel J. Macías-Hernández, Omar Dávila-Maldonado, Ariel Guzmán-Vargas, Rogelio Sotelo-Boyás, Liliana Zarazua-Villalobos

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Abstract

© 2016 Canadian Society for Chemical Engineering The interfacial instability in the development of core-annular flow by the influence of the inlet nozzle in a horizontal pipe was investigated by computational fluid dynamics (CFD). The two-phase flow has been simulated using Volume-Of-Fluid model (VOF) and k-ϵ turbulence model for the core (viscous oil) and the annular phase (water). The simulation results showed that by increasing the water input fraction, the interfacial instability appeared when the eccentricity of the core with an upward position and an oscillating position were generated by the input pressure, turbulent kinetic, and buoyancy force. In the development of the perfect core-annular flow an input concentric core changes to eccentric position with negligible turbulence. The onset of entrainment is formed by a reverse flow at the junction of the two-phase at the nozzle exit. The interfacial formation was analyzed using a proposed two-phase Froude number and modified Eötvos number involving the water input fraction.
Original languageAmerican English
Pages (from-to)2004-2012
Number of pages1802
JournalCanadian Journal of Chemical Engineering
DOIs
StatePublished - 1 Oct 2016

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Nozzles
Computational fluid dynamics
Water
Computer simulation
Froude number
Chemical engineering
Buoyancy
Turbulence models
Two phase flow
Oils
Turbulence
Pipe
Kinetics
Fluids

Cite this

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title = "CFD simulation of interfacial instability from the nozzle in the formation of viscous core-annular flow",
abstract = "{\circledC} 2016 Canadian Society for Chemical Engineering The interfacial instability in the development of core-annular flow by the influence of the inlet nozzle in a horizontal pipe was investigated by computational fluid dynamics (CFD). The two-phase flow has been simulated using Volume-Of-Fluid model (VOF) and k-ϵ turbulence model for the core (viscous oil) and the annular phase (water). The simulation results showed that by increasing the water input fraction, the interfacial instability appeared when the eccentricity of the core with an upward position and an oscillating position were generated by the input pressure, turbulent kinetic, and buoyancy force. In the development of the perfect core-annular flow an input concentric core changes to eccentric position with negligible turbulence. The onset of entrainment is formed by a reverse flow at the junction of the two-phase at the nozzle exit. The interfacial formation was analyzed using a proposed two-phase Froude number and modified E{\"o}tvos number involving the water input fraction.",
author = "Mac{\'i}as-Hern{\'a}ndez, {Manuel J.} and Omar D{\'a}vila-Maldonado and Ariel Guzm{\'a}n-Vargas and Rogelio Sotelo-Boy{\'a}s and Liliana Zarazua-Villalobos",
year = "2016",
month = "10",
day = "1",
doi = "10.1002/cjce.22580",
language = "American English",
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journal = "Canadian Journal of Chemical Engineering",
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CFD simulation of interfacial instability from the nozzle in the formation of viscous core-annular flow. / Macías-Hernández, Manuel J.; Dávila-Maldonado, Omar; Guzmán-Vargas, Ariel; Sotelo-Boyás, Rogelio; Zarazua-Villalobos, Liliana.

In: Canadian Journal of Chemical Engineering, 01.10.2016, p. 2004-2012.

Research output: Contribution to journalArticleResearchpeer-review

TY - JOUR

T1 - CFD simulation of interfacial instability from the nozzle in the formation of viscous core-annular flow

AU - Macías-Hernández, Manuel J.

AU - Dávila-Maldonado, Omar

AU - Guzmán-Vargas, Ariel

AU - Sotelo-Boyás, Rogelio

AU - Zarazua-Villalobos, Liliana

PY - 2016/10/1

Y1 - 2016/10/1

N2 - © 2016 Canadian Society for Chemical Engineering The interfacial instability in the development of core-annular flow by the influence of the inlet nozzle in a horizontal pipe was investigated by computational fluid dynamics (CFD). The two-phase flow has been simulated using Volume-Of-Fluid model (VOF) and k-ϵ turbulence model for the core (viscous oil) and the annular phase (water). The simulation results showed that by increasing the water input fraction, the interfacial instability appeared when the eccentricity of the core with an upward position and an oscillating position were generated by the input pressure, turbulent kinetic, and buoyancy force. In the development of the perfect core-annular flow an input concentric core changes to eccentric position with negligible turbulence. The onset of entrainment is formed by a reverse flow at the junction of the two-phase at the nozzle exit. The interfacial formation was analyzed using a proposed two-phase Froude number and modified Eötvos number involving the water input fraction.

AB - © 2016 Canadian Society for Chemical Engineering The interfacial instability in the development of core-annular flow by the influence of the inlet nozzle in a horizontal pipe was investigated by computational fluid dynamics (CFD). The two-phase flow has been simulated using Volume-Of-Fluid model (VOF) and k-ϵ turbulence model for the core (viscous oil) and the annular phase (water). The simulation results showed that by increasing the water input fraction, the interfacial instability appeared when the eccentricity of the core with an upward position and an oscillating position were generated by the input pressure, turbulent kinetic, and buoyancy force. In the development of the perfect core-annular flow an input concentric core changes to eccentric position with negligible turbulence. The onset of entrainment is formed by a reverse flow at the junction of the two-phase at the nozzle exit. The interfacial formation was analyzed using a proposed two-phase Froude number and modified Eötvos number involving the water input fraction.

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