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On the application of an Eulerian granular model towards dilute phase pneumatic conveying

On the application of an Eulerian granular model towards dilute phase pneumatic conveying
On the application of an Eulerian granular model towards dilute phase pneumatic conveying
Numerical simulations are increasingly being used to study the mechanisms of pneumatic conveying to transport bulk materials such as chemicals, food commodities, ash and sand over extended distances. However, there remain challenges in terms of modelling the solids phase as accurately as possible. As such, the application of a multiphase model with Eulerian treatment for the solids phase is studied here, where the model is compared against published experimental results. In particular, the model constant of the Burns et al. (2004) turbulent dispersion model is varied to determine the most appropriate value for dilute phase flows, where it is found to have greater effects on the particle concentration distribution as compared to the gas phase velocity. Simulation results are in general agreement with experimental data, where gas-phase velocities were well predicted. Inaccuracies in the particle concentration distributions along a vertical pipe section result from the difficulty in capturing the transitional zone where the particle rope starts to disperse. On the other hand, particle diameter variations underpin the mismatches along a horizontal pipe section. Interestingly, increasing particle diameter will lead to the successful capturing of the particle concentration distribution along the horizontal pipe section. The accuracy of employing an Eulerian treatment for solids phase is demonstrated, provided that the particle diameter is accounted for.
pneumatic conveying; dilute phase, Eulerian granular model; numerical simulation;
0032-5910
456
Heng, Jinliang
fec01efb-4f54-476f-8f40-89a7a13190dc
New, Daniel
d2eb03cf-6fde-46f9-ba2e-8d0fb2985f87
Wilson, Philip A.
8307fa11-5d5e-47f6-9961-9d43767afa00
Heng, Jinliang
fec01efb-4f54-476f-8f40-89a7a13190dc
New, Daniel
d2eb03cf-6fde-46f9-ba2e-8d0fb2985f87
Wilson, Philip A.
8307fa11-5d5e-47f6-9961-9d43767afa00

Heng, Jinliang, New, Daniel and Wilson, Philip A. (2018) On the application of an Eulerian granular model towards dilute phase pneumatic conveying. Powder Technology, 327, 456. (doi:10.1016/j.powtec.2017.12.069).

Record type: Article

Abstract

Numerical simulations are increasingly being used to study the mechanisms of pneumatic conveying to transport bulk materials such as chemicals, food commodities, ash and sand over extended distances. However, there remain challenges in terms of modelling the solids phase as accurately as possible. As such, the application of a multiphase model with Eulerian treatment for the solids phase is studied here, where the model is compared against published experimental results. In particular, the model constant of the Burns et al. (2004) turbulent dispersion model is varied to determine the most appropriate value for dilute phase flows, where it is found to have greater effects on the particle concentration distribution as compared to the gas phase velocity. Simulation results are in general agreement with experimental data, where gas-phase velocities were well predicted. Inaccuracies in the particle concentration distributions along a vertical pipe section result from the difficulty in capturing the transitional zone where the particle rope starts to disperse. On the other hand, particle diameter variations underpin the mismatches along a horizontal pipe section. Interestingly, increasing particle diameter will lead to the successful capturing of the particle concentration distribution along the horizontal pipe section. The accuracy of employing an Eulerian treatment for solids phase is demonstrated, provided that the particle diameter is accounted for.

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More information

Submitted date: 16 June 2017
Accepted/In Press date: 22 December 2017
e-pub ahead of print date: 3 January 2018
Published date: 1 March 2018
Keywords: pneumatic conveying; dilute phase, Eulerian granular model; numerical simulation;
Organisations: Fluid Structure Interactions Group, Southampton Marine & Maritime Institute

Identifiers

Local EPrints ID: 410561
URI: https://eprints.soton.ac.uk/id/eprint/410561
ISSN: 0032-5910
PURE UUID: 4cbeb25a-421d-450f-bd28-7041b741b2a0
ORCID for Philip A. Wilson: ORCID iD orcid.org/0000-0002-6939-682X

Catalogue record

Date deposited: 09 Jun 2017 09:06
Last modified: 01 Mar 2018 17:32

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Contributors

Author: Jinliang Heng
Author: Daniel New

University divisions

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