Towards Lattice-Boltzmann modelling of unconfined gas mixing in anaerobic digestion

Dapelo, Davide ORCID: 0000-0002-3442-6857, Trunk, Robin, Krause, Mathias J and Bridgeman, John ORCID: 0000-0001-8348-5004 (2019) Towards Lattice-Boltzmann modelling of unconfined gas mixing in anaerobic digestion. COMPUTERS & FLUIDS, 180. pp. 11-21.

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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.

Item Type:	Article
Uncontrolled Keywords:	Anaerobic digestion, Validation, Homogenised Lattice-Boltzmann method, Boundary conditions, Non-Newtonian, OpenLB
Divisions:	Faculty of Science and Engineering > School of Engineering
Depositing User:	Symplectic Admin
Date Deposited:	17 May 2023 10:20
Last Modified:	17 May 2023 10:20
DOI:	10.1016/j.compfluid.2018.12.008
Open Access URL:	https://doi.org/10.1016/j.compfluid.2018.12.008
Related URLs:	Author Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3170419