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Modelling multiphase flow in vertical pipe using CFD method.

Alaita, David; Hossain, Mamdud; Islam, Sheikh Zahidul


David Alaita


Investigations of gas-liquid-solid flows in large diameter vertical pipes are scarce and detailed three phase flow study is still required to understand the flow interactions. Further investigation using high fidelity modelling is thus necessary due to complex flow interactions of the phases. In this study, a Computational Fluid Dynamics (CFD) method is used to investigate multiphase gas-liquid-solid flow in vertical pipe. Firstly, an appropriate validated numerical simulation scheme for two phase gas-liquid flow using ANSYS Fluent has been used to simulate possible flow regime transitions in vertical pipe. The scheme could predict the various flow regimes spanning bubbly to annular flow without prior knowledge of the flow patterns. The scheme was further extended to investigate the impact of solid particles in the flow field. More importantly the impact of solid concentration on the flow regime development and sand deposition was investigated. The results showed that the particulate deposition is greatly influenced by the particle concentration. In addition, the regime transitions and development in gas-liquid flows are different than that of gas-liquid-solid flows.


ALAITA, D., HOSSAIN, M. and ISLAM, S.Z. 2018. Modelling multiphase flow in vertical pipe using CFD method. In Wahab, M.A. (ed.) Proceedings of the 1st International conference on numerical modelling in engineering (NME 2018), 28-29 August 2018, Ghent, Belgium. Volume 2: numerical modelling in mechanical and materials engineering. Lecture notes in mechanical engineering. Singapore: Springer [online], pages 300-319. Available from:

Conference Name 1st International conference on numerical modelling in engineering (NME 2018)
Conference Location Ghent, Belgium
Start Date Aug 28, 2018
End Date Aug 29, 2018
Acceptance Date May 15, 2018
Online Publication Date Aug 29, 2018
Publication Date Aug 29, 2018
Deposit Date Oct 16, 2018
Publicly Available Date Aug 30, 2019
Print ISSN 2195-4356
Electronic ISSN 2195-4364
Publisher Springer
Pages 300-319
Series Title Lecture notes in mechanical engineering
Series ISSN 2195-4356
ISBN 9789811322723
Keywords CFD; Fluidisation; Gas liquid solids; Interfacial area concentration; Large diameter pipe; Mass flux; Vertical pipe simulation; Sand transport; Multi fluid VOF
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