Towards Lattice-Boltzmann modelling of unconfined gas mixing in anaerobic digestion
View/ Open
Dapelo_et_al_Computers_&_Fluids.pdf (2.666Mb)
Download
Publication date
2019-02-15Keyword
Anaerobic digestionValidation
Homogenised Lattice-Boltzmann method
Boundary conditions
Non-Newtonian
OpenLB
Rights
© 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/ )Peer-Reviewed
YesOpen Access status
openAccessAccepted for publication
2018-12-17
Metadata
Show full item recordAbstract
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.Version
Published versionCitation
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.Link to Version of Record
https://doi.org/10.1016/j.compfluid.2018.12.008Type
Articleae974a485f413a2113503eed53cd6c53
https://doi.org/10.1016/j.compfluid.2018.12.008