Professor Mamdud Hossain m.hossain@rgu.ac.uk
Professor
Investigation of slug-churn flow induced transient excitation forces at pipe bend.
Hossain, Mamdud; Chinenye-Kanu, Nkemjika Mirian; Droubi, Ghazi Mohamad; Islam, Sheikh Zahidul
Authors
Nkemjika Mirian Chinenye-Kanu
Dr Ghazi Droubi m.g.droubi@rgu.ac.uk
Principal Lecturer
Dr Sheikh Islam s.z.islam1@rgu.ac.uk
Lecturer
Abstract
Numerical simulations of two-phase flow induced fluctuating forces at a pipe bend have been carried out to study the characteristics of multiphase flow induced vibration (FIV). The multiphase flow patterns and turbulence were modelled using the volume of fluid (VOF) method and the k−ϵ turbulence model respectively. Simulations of seventeen cases of slug and churn flows have been carried out showing the effects of superficial gas and superficial liquid velocities. The simulations results show good agreement of the volume fraction fluctuation frequencies of slug and churn flows with the reported experiment. In addition, the vibration characteristics of the excitation force have been accurately captured. The simulation results show that the predominant frequency of fluctuations of force decreases and the RMS of force fluctuation increases with the increase of superficial gas velocity. On the other hand, both predominant frequency and the RMS of force fluctuations increases with the increase of superficial liquid velocity. Increase of gas fraction narrows the range of frequency ranges, while increasing the liquid expands the frequency ranges of force fluctuations.
Citation
HOSSAIN, M., CHINENYE-KANU, N.M., DROUBI, G.M. and ISLAM, S.Z. 2019. Investigation of slug-churn flow induced transient excitation forces at pipe bend. Journal of fluids and structures [online], 91, article ID 102733. Available from: https://doi.org/10.1016/j.jfluidstructs.2019.102733
Journal Article Type | Article |
---|---|
Acceptance Date | Sep 2, 2019 |
Online Publication Date | Sep 17, 2019 |
Publication Date | Nov 1, 2019 |
Deposit Date | Sep 5, 2019 |
Publicly Available Date | Sep 18, 2020 |
Journal | Journal of Fluids and Structures |
Print ISSN | 0889-9746 |
Electronic ISSN | 1095-8622 |
Publisher | Elsevier |
Peer Reviewed | Peer Reviewed |
Volume | 91 |
Article Number | 102733 |
DOI | https://doi.org/10.1016/j.jfluidstructs.2019.102733 |
Keywords | Flow induced vibration; Numerical modelling; Pipe bend; Slug/churn flow; Force fluctuations |
Public URL | https://rgu-repository.worktribe.com/output/479121 |
Contract Date | Sep 5, 2019 |
Files
HOSSAIN 2019 Investigation of slug churn
(1.4 Mb)
PDF
Publisher Licence URL
https://creativecommons.org/licenses/by-nc-nd/4.0/
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