dorsal/arxiv
View SchemaMesoscopic two-phase model for describing apparent slip in micro-channel flows
| Authors | R. Benzi, L. Biferale, M. Sbragaglia, S. Succi, F. Toschi |
|---|---|
| Categories | |
| ArXiv ID | physics/0507026 |
| URL | https://arxiv.org/abs/physics/0507026 |
| DOI | 10.1209/epl/i2006-10022-0 |
| Journal | Europhys. Lett. 74, 651 (2006) |
Abstract
The phenomenon of apparent slip in micro-channel flows is analyzed by means of a two-phase mesoscopic lattice Boltzmann model including non-ideal fluid-fluid and fluid-wall interactins. The weakly-inhomogeneous limit of this model is solved analytically. The present mesoscopic approach permits to access much larger scales than molecular dynamics, and comparable with those attained by continuum methods. However, at variance with the continuum approach, the existence of a gas layer near the wall does not need to be postulated a priori, but emerges naturally from the underlying non-ideal mesoscopic dynamics. It is therefore argued that a mesoscopic Lattice Boltzmann approach with non-ideal fluid-fluid and fluid-wall interactions might achieve an optimal compromise between physical realism and computational efficiency for the study of channel micro-flows.
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"abstract": "The phenomenon of apparent slip in micro-channel flows is analyzed by means\nof a two-phase mesoscopic lattice Boltzmann model including non-ideal\nfluid-fluid and fluid-wall interactins. The weakly-inhomogeneous limit of this\nmodel is solved analytically.\n The present mesoscopic approach permits to access much larger scales than\nmolecular dynamics, and comparable with those attained by continuum methods.\nHowever, at variance with the continuum approach, the existence of a gas layer\nnear the wall does not need to be postulated a priori, but emerges naturally\nfrom the underlying non-ideal mesoscopic dynamics. It is therefore argued that\na mesoscopic Lattice Boltzmann approach with non-ideal fluid-fluid and\nfluid-wall interactions might achieve an optimal compromise between physical\nrealism and computational efficiency for the study of channel micro-flows.",
"arxiv_id": "physics/0507026",
"authors": [
"R. Benzi",
"L. Biferale",
"M. Sbragaglia",
"S. Succi",
"F. Toschi"
],
"categories": [
"physics.flu-dyn",
"cond-mat.stat-mech",
"nlin.CG"
],
"doi": "10.1209/epl/i2006-10022-0",
"journal_ref": "Europhys. Lett. 74, 651 (2006)",
"title": "Mesoscopic two-phase model for describing apparent slip in micro-channel flows",
"url": "https://arxiv.org/abs/physics/0507026"
},
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