dorsal/arxiv
View SchemaSpinodal Decomposition in Binary Gases
| Authors | S. Bastea, J. L. Lebowitz |
|---|---|
| Categories | |
| ArXiv ID | patt-sol/9703006 |
| URL | https://arxiv.org/abs/patt-sol/9703006 |
| DOI | 10.1103/PhysRevLett.78.3499 |
| Journal | Phys. Rev. Lett. 78, 3499, (1997). |
Abstract
We carried out three-dimensional simulations, with about 1.4 million particles, of phase segregation in a low density binary fluid mixture, described mesoscopically by energy and momentum conserving Boltzmann-Vlasov equations. Using a combination of Direct Simulation Monte Carlo(DSMC) for the short range collisions and a version of Particle-In-Cell(PIC) evolution for the smooth long range interaction, we found dynamical scaling after the ratio of the interface thickness(whose shape is described approximately by a hyperbolic tangent profile) to the domain size is less than ~0.1. The scaling length R(t) grows at late times like t^alpha, with alpha=1 for critical quenches and alpha=1/3 for off-critical ones. We also measured the variation of temperature, total particle density and hydrodynamic velocity during the segregation process.
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"abstract": "We carried out three-dimensional simulations, with about 1.4 million\nparticles, of phase segregation in a low density binary fluid mixture,\ndescribed mesoscopically by energy and momentum conserving Boltzmann-Vlasov\nequations. Using a combination of Direct Simulation Monte Carlo(DSMC) for the\nshort range collisions and a version of Particle-In-Cell(PIC) evolution for the\nsmooth long range interaction, we found dynamical scaling after the ratio of\nthe interface thickness(whose shape is described approximately by a hyperbolic\ntangent profile) to the domain size is less than ~0.1. The scaling length R(t)\ngrows at late times like t^alpha, with alpha=1 for critical quenches and\nalpha=1/3 for off-critical ones. We also measured the variation of temperature,\ntotal particle density and hydrodynamic velocity during the segregation\nprocess.",
"arxiv_id": "patt-sol/9703006",
"authors": [
"S. Bastea",
"J. L. Lebowitz"
],
"categories": [
"patt-sol",
"cond-mat.stat-mech",
"nlin.PS"
],
"doi": "10.1103/PhysRevLett.78.3499",
"journal_ref": "Phys. Rev. Lett. 78, 3499, (1997).",
"title": "Spinodal Decomposition in Binary Gases",
"url": "https://arxiv.org/abs/patt-sol/9703006"
},
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