Picture of boy being examining by doctor at a tuberculosis sanatorium

Understanding our future through Open Access research about our past...

Strathprints makes available scholarly Open Access content by researchers in the Centre for the Social History of Health & Healthcare (CSHHH), based within the School of Humanities, and considered Scotland's leading centre for the history of health and medicine.

Research at CSHHH explores the modern world since 1800 in locations as diverse as the UK, Asia, Africa, North America, and Europe. Areas of specialism include contraception and sexuality; family health and medical services; occupational health and medicine; disability; the history of psychiatry; conflict and warfare; and, drugs, pharmaceuticals and intoxicants.

Explore the Open Access research of the Centre for the Social History of Health and Healthcare. Or explore all of Strathclyde's Open Access research...

Image: Heart of England NHS Foundation Trust. Wellcome Collection - CC-BY.

Numerical study of an individual Taylor bubble rising through stagnant liquids under laminar flow regime

Massoud, E.Z. and Xiao, Q. and El-Gamal, H.A. and Teamah, M.A. (2018) Numerical study of an individual Taylor bubble rising through stagnant liquids under laminar flow regime. Ocean Engineering, 162. pp. 117-137. ISSN 0029-8018

[img] Text (Massoud-etal-OE-2018-Numerical-study-of-an-individual-Taylor-bubble-rising-through-stagnant)
Massoud_etal_OE_2018_Numerical_study_of_an_individual_Taylor_bubble_rising_through_stagnant.pdf
Accepted Author Manuscript
Restricted to Repository staff only until 29 May 2019.
License: Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 logo

Download (2MB) | Request a copy from the Strathclyde author

Abstract

Slug flow is one of the main flow regimes encountered in multiphase flow systems especially in oil and gas production systems. In the present study, the rise of single Taylor bubble through vertical stagnant Newtonian liquid is investigated by performing complete dimensionless treatment followed by an order of magnitude analysis of the terms of equations of motion. Based on this analysis, it is concluded that Froude, E€otv€os and Reynolds numbers are the sole physical parameters influencing the dimensionless slug flow equations. Using the guidelines of the order of magnitude analysis, computational fluid dynamics simulation is carried out to investigate the dynamics of Taylor bubbles in vertical pipe using the volume-of-fluid (VOF) method. Good agreement with previous experimental data and models available in the literature is established confirming that the density ratio, viscosity ratio and the initial ratio of bubble size to pipe diameter ðLTB=DÞ have minimal effect on the main hydrodynamic features of slug flow. Based on the developed results, correlations for the terminal velocity of the Taylor bubble and the dimensionless wall shear stress are proposed showing the significance of these main dimensionless parameters and support other important theoretical and experimental work available in the literature.