dc.contributor.author | Tyvand, Peder A. | |
dc.contributor.author | Nøland, Jonas Kristiansen | |
dc.contributor.author | Storesletten, Leiv | |
dc.date.accessioned | 2019-11-04T09:17:55Z | |
dc.date.available | 2019-11-04T09:17:55Z | |
dc.date.created | 2019-03-13T12:34:29Z | |
dc.date.issued | 2019 | |
dc.identifier.citation | Transport in Porous Media. 2019, 128 (2), 633-651. | nb_NO |
dc.identifier.issn | 0169-3913 | |
dc.identifier.uri | http://hdl.handle.net/11250/2626302 | |
dc.description.abstract | The fourth-order Darcy–Bénard eigenvalue problem for onset of thermal convection in a 2D rectangular porous box is investigated. The conventional type of solution has normal-mode dependency in at least one of the two spatial directions. The present eigenfunctions are of non-normal-mode type in both the horizontal and the vertical direction. A numerical solution is found by the finite element method, since no analytical method is known for this non-degenerate fourth-order eigenvalue problem. All four boundaries of the rectangle are impermeable. The thermal conditions are handpicked to be incompatible with normal modes: The lower boundary and the right-hand wall are heat conductors. The upper boundary has given heat flux. The left-hand wall is thermally insulating. The computed eigenfunctions have novel types of complicated cell structures, with intricate internal cell walls. | nb_NO |
dc.language.iso | eng | nb_NO |
dc.publisher | Springer Verlag | nb_NO |
dc.relation.uri | https://link.springer.com/article/10.1007/s11242-019-01263-5 | |
dc.title | A Non-normal-Mode Marginal State of Convection in a Porous Rectangle | nb_NO |
dc.type | Journal article | nb_NO |
dc.type | Peer reviewed | nb_NO |
dc.description.version | acceptedVersion | nb_NO |
dc.source.pagenumber | 633-651 | nb_NO |
dc.source.volume | 128 | nb_NO |
dc.source.journal | Transport in Porous Media | nb_NO |
dc.source.issue | 2 | nb_NO |
dc.identifier.doi | 10.1007/s11242-019-01263-5 | |
dc.identifier.cristin | 1684442 | |
dc.description.localcode | This is a post-peer-review, pre-copyedit version of an article published in [Transport in Porous Media] Locked until 14.3.2020 due to copyright restrictions. The final authenticated version is available online at: https://doi.org/10.1007/s11242-019-01263-5 | nb_NO |
cristin.unitcode | 194,63,0,0 | |
cristin.unitname | Fakultet for informasjonsteknologi og elektroteknikk | |
cristin.ispublished | true | |
cristin.fulltext | postprint | |
cristin.qualitycode | 2 | |