A kinetic model for vapor-liquid flows

Aldo Frezzotti; Livio Gibelli; Silvia Lorenzani

doi:10.1063/1.1941585

A kinetic model for vapor-liquid flows

Aldo Frezzotti^*, Livio Gibelli, Silvia Lorenzani

^*Corresponding author for this work

School of Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

The evaporation of a liquid slab into vacuum is studied by numerical solutions of the Enskog-Vlasov equation for a fluid of spherical molecules interacting by Sutherland potential. The main aim of this work is to obtain the structure of the vapor-liquid interface in non-equilibrium conditions as well as the distribution function of evaporating molecules. The results show that the distribution function of molecules crossing a properly defined vapor-liquid boundary is almost Maxwellian and that the vapor phase is reasonably well described by the Boltzmann equation with diffusive boundary condition.

Original language	English
Title of host publication	RAREFIED GAS DYNAMICS
Subtitle of host publication	24th International Symposium on Rarefied Gas Dynamics, RGD24
Pages	497-502
Number of pages	6
Volume	762
DOIs	https://doi.org/10.1063/1.1941585
Publication status	Published - 16 May 2005
Event	24th International Symposium on Rarefied Gas Dynamics, RGD24 - Bari, Italy Duration: 10 Jul 2004 → 16 Jul 2004

Conference

Conference	24th International Symposium on Rarefied Gas Dynamics, RGD24
Country/Territory	Italy
City	Bari
Period	10/07/04 → 16/07/04

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10.1063/1.1941585

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AU - Gibelli, Livio

AU - Lorenzani, Silvia

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N2 - The evaporation of a liquid slab into vacuum is studied by numerical solutions of the Enskog-Vlasov equation for a fluid of spherical molecules interacting by Sutherland potential. The main aim of this work is to obtain the structure of the vapor-liquid interface in non-equilibrium conditions as well as the distribution function of evaporating molecules. The results show that the distribution function of molecules crossing a properly defined vapor-liquid boundary is almost Maxwellian and that the vapor phase is reasonably well described by the Boltzmann equation with diffusive boundary condition.

AB - The evaporation of a liquid slab into vacuum is studied by numerical solutions of the Enskog-Vlasov equation for a fluid of spherical molecules interacting by Sutherland potential. The main aim of this work is to obtain the structure of the vapor-liquid interface in non-equilibrium conditions as well as the distribution function of evaporating molecules. The results show that the distribution function of molecules crossing a properly defined vapor-liquid boundary is almost Maxwellian and that the vapor phase is reasonably well described by the Boltzmann equation with diffusive boundary condition.

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U2 - 10.1063/1.1941585

DO - 10.1063/1.1941585

M3 - Conference contribution

AN - SCOPUS:33749035759

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SN - 9780735402478

VL - 762

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BT - RAREFIED GAS DYNAMICS

T2 - 24th International Symposium on Rarefied Gas Dynamics, RGD24

Y2 - 10 July 2004 through 16 July 2004

ER -

A kinetic model for vapor-liquid flows

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