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High viscous oil–water two–phase flow: experiments & numerical simulations

Archibong-Eso, Archibong; Shi, Jing; Baba, Yahaya D.; Aliyu, Aliyu M.; Raji, Yusuf O.; Yeung, Hoi


Archibong Archibong-Eso

Jing Shi

Yahaya D. Baba

Aliyu M. Aliyu

Yusuf O. Raji

Hoi Yeung


An experimental study on highly viscous oil-water two-phase flow conducted in a 5.5 m long and 25.4 mm internal diameter (ID) pipeline is presented. Mineral oil with viscosity ranging from 3.5 Pa.s – 5.0 Pa.s and water were used as test fluid for this study. Experiments were conducted for superficial velocities of oil and water ranging from 0.06 to 0.55 m/s and 0.01 m/s to 1.0 m/s respectively. Axial pressure measurements were made from which the pressure gradients were calculated. Flow pattern determination was aided by high definition video recordings. Numerical simulation of experimental flow conditions is performed using a commercially available Computational Fluid Dynamics code. Results show that at high oil superficial velocities, Core Annular Flow (CAF) is the dominant flow pattern while Oil Plug in Water Flow (OPF) and Dispersed Oil in Water (DOW) flow patterns are dominant high water superficial velocities. Pressure Gradient results showed a general trend of reduction to a minimum as water superficial velocity increases before subsequently increasing on further increasing the superficial water velocity. The CFD results performed well in predicting the flow configurations observed in the experiments.


Archibong-Eso, A., Shi, J., Baba, Y. D., Aliyu, A. M., Raji, Y. O., & Yeung, H. (2019). High viscous oil–water two–phase flow: experiments & numerical simulations. Heat and Mass Transfer, 55(3), 755-767.

Journal Article Type Article
Acceptance Date Aug 21, 2018
Online Publication Date Aug 28, 2018
Publication Date 2019-03
Deposit Date Mar 13, 2019
Publicly Available Date Aug 29, 2019
Journal Heat and Mass Transfer
Print ISSN 0947-7411
Electronic ISSN 1432-1181
Publisher Springer Verlag
Peer Reviewed Peer Reviewed
Volume 55
Issue 3
Pages 755-767
Keywords General Engineering; Condensed Matter Physics; Fluid Flow and Transfer Processes
Public URL
Publisher URL
Additional Information This is a post-peer-review, pre-copyedit version of an article published in Heat and Mass Transfer. The final authenticated version is available online at:


2018-Archibong et al - High-viscous oil-water flow - expts and simulation (1.1 Mb)

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