Numerical investigation of meso-scale structures using a two fluid model with non-Newtonian closure
| dc.book.title | Bulletin of the American Physical Society : 2005 58th Annual Meeting of the Division of Fluid Dynamics | |
| dc.contributor.author | Pérez, J. | |
| dc.contributor.author | Pinelli, Alfredo | |
| dc.date.accessioned | 2023-06-20T13:39:44Z | |
| dc.date.available | 2023-06-20T13:39:44Z | |
| dc.date.issued | 2005 | |
| dc.description | Meeting held Sunday–Tuesday, November 20–22, 2005; Chicago, IL | |
| dc.description.abstract | The idea is based on identifying the physical roles of the solid and fluid stress tensors in the solid phase momentum equation. The tensors are reformulated as a sum of different terms. A comparison with the closure proposed by Marchioro et al. (Int. J. Multiphase flow. 27: 237-276, 2001), leads to a new non-Newtonian closure. The complete model has been tested with two different scenarios. First, we used an initial Taylor-Green base flow for the fluid phase with a highly diluted regime with mass fraction of order one. This case allows for a critical evaluation of the present formulation vs Saffman's 1962. We also considered a base channel flow with solid particles. Different regimes (solid fractions) have been considered. The results are compared vs Agrawal et al. (J. Fluid Mech. 445: 151-185, 2001) in terms of of meso-scale solid structures behaviours. The numerical discretization for both phases is based on a finite volume formulation using a Rusanov scheme for the hyperbolic part of the equations that preserves the positivity of the void fraction. | |
| dc.description.department | Depto. de Análisis Matemático y Matemática Aplicada | |
| dc.description.faculty | Fac. de Ciencias Matemáticas | |
| dc.description.refereed | TRUE | |
| dc.description.status | pub | |
| dc.eprint.id | https://eprints.ucm.es/id/eprint/22060 | |
| dc.identifier.officialurl | http://meetings.aps.org/link/BAPS.2005.DFD.HE.3 | |
| dc.identifier.relatedurl | http://www.aps.org/ | |
| dc.identifier.uri | https://hdl.handle.net/20.500.14352/53271 | |
| dc.publisher | American Physical Society | |
| dc.rights.accessRights | metadata only access | |
| dc.subject.cdu | 536 | |
| dc.subject.ucm | Física (Física) | |
| dc.subject.unesco | 22 Física | |
| dc.title | Numerical investigation of meso-scale structures using a two fluid model with non-Newtonian closure | |
| dc.type | book part | |
| dspace.entity.type | Publication | |
| relation.isAuthorOfPublication | 2b7c93f7-c4d1-42d5-820a-333c428d96c2 | |
| relation.isAuthorOfPublication.latestForDiscovery | 2b7c93f7-c4d1-42d5-820a-333c428d96c2 |