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

Dapelo, D.; Trunk, Robin; Krause, Mathias J.; Bridgeman, J.

A novel Lattice-Boltzmann model to simulate gas mixing in anaerobic digestion is developed and de- scribed. For the first time, Euler–Lagrange multiphase, non-Newtonian and turbulence modelling are ap- plied jontly with a novel hybrid boundary condition. The model is validated in a laboratory-scale frame- work 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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Verlagsausgabe §
DOI: 10.5445/IR/1000089189
Veröffentlicht am 08.01.2019
DOI: 10.1016/j.compfluid.2018.12.008
Zitationen: 3
Web of Science
Zitationen: 1
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Mechanische Verfahrenstechnik und Mechanik (MVM)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2019
Sprache Englisch
Identifikator ISSN: 0045-7930, 1879-0747
KITopen-ID: 1000089189
Erschienen in Computers & fluids
Band 180
Seiten 11-21
Schlagwörter Anaerobic digestion, Validation, Homogenised Lattice-Boltzmann method, Boundary conditions, Non-Newtonian, OpenLB
Nachgewiesen in Web of Science
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