dc.contributor.author | Zhang, Jingyuan | |
dc.contributor.author | Li, Tian | |
dc.contributor.author | Ström, Henrik | |
dc.contributor.author | Løvås, Terese | |
dc.date.accessioned | 2020-02-07T08:27:32Z | |
dc.date.available | 2020-02-07T08:27:32Z | |
dc.date.created | 2020-02-03T21:50:29Z | |
dc.date.issued | 2020 | |
dc.identifier.citation | Chemical Engineering Journal. 2020, 387 | nb_NO |
dc.identifier.issn | 1385-8947 | |
dc.identifier.uri | http://hdl.handle.net/11250/2640155 | |
dc.description.abstract | In this study, a computational fluid dynamics (CFD) model with three coarse graining algorithms is developed with the implementation of a layer based thermally thick particle model. Three additional coupling methods, cube averaging method (CAM), two-grid method (TGM) and diffusion-based method (DBM), are implemented. These coupling methods are validated and compared with the widely used particle centroid method (PCM) for combustion of a biomass particle in a single particle combustor. It is shown that the PCM has a strong dependence on the grid size, whereas the CAM and TGM are not only grid independent but also improve the predictability of the simulations. Meanwhile, a new parameter, the coupling length, is introduced. This parameter affects the sampling of the gas phase properties required for the particle model and the distribution of the solid phase properties. A method to estimate the coupling length by using empirical correlations is given. In general, it is found that a too small coupling length underestimates the heating-up rate and devolatilization rate, while a too large coupling length overestimates the O2 concentration at the particle surface. The coupling length also has an influence on the distribution of the gas phase products. | nb_NO |
dc.language.iso | eng | nb_NO |
dc.publisher | Elsevier | nb_NO |
dc.relation.uri | https://www.sciencedirect.com/science/article/pii/S1385894719333790 | |
dc.rights | Navngivelse 4.0 Internasjonal | * |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/deed.no | * |
dc.title | Grid-independent Eulerian-Lagrangian approaches for simulations of solid fuel particle combustion | nb_NO |
dc.type | Journal article | nb_NO |
dc.type | Peer reviewed | nb_NO |
dc.description.version | publishedVersion | nb_NO |
dc.source.volume | 387 | nb_NO |
dc.source.journal | Chemical Engineering Journal | nb_NO |
dc.identifier.doi | 10.1016/j.cej.2019.123964 | |
dc.identifier.cristin | 1790476 | |
dc.relation.project | Norges forskningsråd: 267957 | nb_NO |
dc.description.localcode | This is an open access article distributed under the terms of the Creative Commons CC-BY license, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. | nb_NO |
cristin.unitcode | 194,64,25,0 | |
cristin.unitname | Institutt for energi- og prosessteknikk | |
cristin.ispublished | true | |
cristin.fulltext | original | |
cristin.qualitycode | 2 | |