Vertical annular gas-liquid two-phase flow in large diameter pipes

Aliyu, Aliyu (2016) Vertical annular gas-liquid two-phase flow in large diameter pipes. PhD thesis, Cranfield University.

Full content URL: https://dspace.lib.cranfield.ac.uk/handle/1826/984...

Documents
Vertical Annular Two Phase Flow in Large Diameter Pipes
PhD Thesis
[img] PDF
Aliyu_A_M_2015.pdf_sequence=1 - Whole Document
Restricted to Repository staff only

3MB
Item Type:Thesis (PhD)
Item Status:Live Archive

Abstract

Gas-liquid annular two phase flow in pipes is important in the oil and gas, nuclear and the process industries. It has been identified as one of the most frequently encountered flow regimes and many models (empirical and theoretical) for the film flow and droplet behaviour for example have been developed since the 1950s. However, the behaviour in Large pipes (those with diameter greater than 100 mm) has not been fully explored. As a result, the two- phase flow characteristics, data, and models specifically for such pipes are scarce or non-existent such that those from smaller pipes are extrapolated for use in design and operation. Many authors have cautioned against this approach since multiphase pipe flow behaviour is different between small and large pipes. For instance the typical slug flows seem not to occur in vertical upwards flows when the pipe diameter exceeds 100 mm. It is therefore imperative that theoretical models and empirical correlations for such large diameter pipes are specifically developed.

Keywords:Multiphase flow, Pressure gradient, annular two phase flow, Falling films
Subjects:H Engineering > H850 Petroleum Engineering
H Engineering > H821 Nuclear Engineering
H Engineering > H830 Chemical Process Engineering
H Engineering > H141 Fluid Mechanics
H Engineering > H300 Mechanical Engineering
Divisions:College of Science > School of Engineering
ID Code:47983
Deposited On:29 Mar 2022 15:48

Repository Staff Only: item control page