dc.contributor.author | Das, S. | |
dc.contributor.author | Milacic, E. | |
dc.contributor.author | Patel, H.V. | |
dc.contributor.author | Deen, N.G. | |
dc.contributor.author | Kuipers, J.A.M. | |
dc.date.accessioned | 2018-01-29T17:03:30Z | |
dc.date.available | 2018-01-29T17:03:30Z | |
dc.date.issued | 2017 | |
dc.identifier.isbn | 978-82-536-1544-8 | |
dc.identifier.issn | 2387-4295 | |
dc.identifier.uri | http://hdl.handle.net/11250/2480472 | |
dc.description.abstract | We have investigated the dynamics of droplet spreading and liquid penetration at the surface of a porous medium at zero-gravity condition. A coupled IBM-VOF finite volume code has been used to perform pore-scale level fully resolved numerical simulations. The geometrical details of the solid porous matrix are resolved by a sharp interface immersed boundary method (IBM) on a Cartesian grid, whereas the motion of the gas-liquid interface is tracked by a mass conservative volume of fluid (VOF) method. At small scales, the contact line dynamics mainly govern the spreading and capillary penetration. In the present case, the motion of the gas-liquid interface at the immersed boundary is modeled by imposing the contact angle as a boundary condition at the threephase contact line. All the simulations are performed using a model porous structure that is approximated by a 3D cubic scaffold with cylindrical struts. The porosity (e) of the porous structure is varied from e = 0 (flat plate) to e = 0:65 and the equilibrium contact angle Q is varied from Q = 30X (hydrophilic) to Q = 135X (hydrophobic). The effect of porosity and contact angle on the transient evolution of penetration and spreading have been presented and compared with classical models. | |
dc.language.iso | eng | |
dc.publisher | SINTEF Academic Press | |
dc.relation.ispartof | Progress in Applied CFD – CFD2017 Selected papers from 12th International Conference on Computational Fluid Dynamics in the Oil & Gas, Metallurgical and Process Industries | |
dc.relation.ispartofseries | SINTEF Proceedings;2 | |
dc.subject | Three phase flow | |
dc.subject | Immersed boundary method; IBM | |
dc.subject | Volume of Fluid; VOF | |
dc.subject | Contact line dynamics | |
dc.subject | Capilary penetration | |
dc.title | A DNS study of droplet spreading and penetration on a porous medium | |
dc.title.alternative | Progress in Applied CFD. Selected papers from 10th International Conference on Computational Fluid Dynamics in the Oil & Gas, Metallurgical and Process Industries | |
dc.type | Chapter | |
dc.type | Conference object | |
dc.type | Peer reviewed | |
dc.description.version | publishedVersion | |
dc.subject.nsi | VDP::Technology: 500 | |