Show simple item record

dc.contributor.authorDapelo, Davide
dc.contributor.authorTrunk, R.
dc.contributor.authorKrause, M.J.
dc.contributor.authorCassidy, N.
dc.contributor.authorBridgeman, John
dc.date.accessioned2020-11-25T09:45:21Z
dc.date.accessioned2020-12-04T14:30:51Z
dc.date.available2020-11-25T09:45:21Z
dc.date.available2020-12-04T14:30:51Z
dc.date.issued2020-09-15
dc.identifier.citationDapelo D, Trunk R, Krause MJ et al (2020) The application of Buckingham π theorem to Lattice-Boltzmann modelling of sewage sludge digestion. Computers and Fluids. 209: 104632.en_US
dc.identifier.urihttp://hdl.handle.net/10454/18192
dc.descriptionYesen_US
dc.description.abstractFor the first time, a set of Lattice-Boltzmann two-way coupling pointwise Euler-Lagrange models is applied to gas mixing of sludge for anaerobic digestion. The set comprises a local model, a “first-neighbour” (viz., back-coupling occurs to the voxel where a particle sits, plus its first neighbours) and a “smoothing-kernel” (forward- and back-coupling occur through a smoothed-kernel averaging procedure). Laboratory-scale tests display grid-independence problems due to bubble diameter being larger than voxel size, thereby breaking the pointwise Euler-Lagrange assumption of negligible particle size. To tackle this problem and thereby have grid-independent results, a novel data-scaling approach to pointwise Euler-Lagrange grid independence evaluation, based on an application of the Buckingham π theorem, is proposed. Evaluation of laboratory-scale flow patterns and comparison to experimental data show only marginal differences in between the models, and between numerical modelling and experimental data. Pilot-scale simulations show that all the models produce grid-independent, coherent data if the Euler-Lagrange assumption of negligible (or at least, small) particle size is recovered. In both cases, a second-order convergence was achieved. A discussion follows on the opportunity of applying the proposed data-scaling approach rather than the smoothing-kernel model.en_US
dc.language.isoenen_US
dc.relation.isreferencedbyhttps://doi.org/10.1016/j.compfluid.2020.104632en_US
dc.rights(c) 2020 The Authors. This is an Open Access article distributed under the Creative Commons CC-BY license (https://creativecommons.org/licenses/by/4.0/)en_US
dc.subjectAnaerobic digestionen_US
dc.subjectEuler-Lagrangeen_US
dc.subjectGrid independenceen_US
dc.subjectLattice-Boltzmannen_US
dc.subjectNon-Newtonianen_US
dc.subjectOpenLBen_US
dc.titleThe application of Buckingham π theorem to Lattice-Boltzmann modelling of sewage sludge digestionen_US
dc.status.refereedYesen_US
dc.date.Accepted2020-06-19
dc.date.application2020-06-23
dc.typeArticleen_US
dc.type.versionPublished versionen_US
dc.date.updated2020-11-25T09:45:34Z
refterms.dateFOA2020-12-04T14:31:13Z


Item file(s)

Thumbnail
Name:
Dapeloetal.-2020.pdf
Size:
2.779Mb
Format:
PDF
Description:
dapelo_et_al_2020

This item appears in the following Collection(s)

Show simple item record