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Towards Lattice-Boltzmann modelling of unconfined gas mixing in anaerobic digestion
Dapelo, Davide Trunk, R. Krause, M.J. Bridgeman, John
Dapelo, Davide
Trunk, R.
Krause, M.J.
Bridgeman, John
Publication Date
2019-02-15
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© 2018 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY license. (http://creativecommons.org/licenses/by/4.0/ )
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openAccess
Accepted for publication
2018-12-17
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Abstract
A novel Lattice-Boltzmann model to simulate gas mixing in anaerobic digestion is developed and described. For the first time, Euler–Lagrange multiphase, non-Newtonian and turbulence modelling are applied jontly with a novel hybrid boundary condition. The model is validated in a laboratory-scale framework and flow patterns are assessed through Particle Imaging Velocimetry (PIV) and innovative Positron-Emission Particle Tracking (PEPT). The model is shown to reproduce the experimental flow patterns with fidelity in both qualitative and quantitative terms.
The model opens up a new approach to computational modelling of the complex multiphase flow in anaerobic digesters and offers specific advantages, such as computational efficiency, over an analogous Euler-Lagrange finite-volume computational fluid dynamics approach.
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Published version
Citation
Dapelo D, Trunk R, Krause MJ et al (2019) Towards a Lattice-Boltzmann modelling of unconfined gas mixing in anaerobic digestion. Computers & Fluid. 180: 11-21.
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Article