Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

A Two-Fluid Model for High Viscosity Upward Annular Flow in Vertical Pipes

Version 1 : Received: 4 April 2021 / Approved: 6 April 2021 / Online: 6 April 2021 (10:10:47 CEST)

How to cite: Ribeiro, J.X.F.; Liao, R.; Aliyu, A.M.; Ahmed, S.K.B.; Baba, Y.D.; Almabrok, A.A.; Archibong-Eso, A.; Liu, Z. A Two-Fluid Model for High Viscosity Upward Annular Flow in Vertical Pipes. Preprints 2021, 2021040164 (doi: 10.20944/preprints202104.0164.v1). Ribeiro, J.X.F.; Liao, R.; Aliyu, A.M.; Ahmed, S.K.B.; Baba, Y.D.; Almabrok, A.A.; Archibong-Eso, A.; Liu, Z. A Two-Fluid Model for High Viscosity Upward Annular Flow in Vertical Pipes. Preprints 2021, 2021040164 (doi: 10.20944/preprints202104.0164.v1).

Abstract

Selection of appropriate friction factors is paramount for accurate prediction of key flow characteristics in gas–liquid two-phase flows. In this work, experimental investigation of vertical air and oil (with viscosities up to 200 mPa s) flow in a 0.060-m ID pipe is reported. Superficial air and oil velocity ranges utilized are from 22.37 to 59.06 m/s and 0.05 to 0.16 m/s respectively. The influence of estimation of interfacial friction factor on accurate determination of film thickness, void fraction and pressure gradient was investigated using a two-fluid model. The results indicated that the two-fluid model is capable of accurately predicting flow characteristics. Further, it reveals that the best performing correlations are the Belt et al. and Ambrosini et al. correlations.

Subject Areas

two-phase flow; interfacial friction factor; vertical pipes; higher viscosity, pressure drop

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