Kinetic boundary conditions for vapor–gas binary mixture

Abstract Using molecular dynamics simulations, the present study investigated the precise characteristics of the binary mixture of condensable gas (vapor) and non-condensable gas (NC gas) molecules creating kinetic boundary conditions (KBCs) at a gas–liquid interface in equilibrium. We counted the molecules utilizing the improved two-boundary method proposed in previous studies by Kobayashi et al. (Heat Mass Trans 52:1851–1859, 2016. doi:10.1007/s00231-015-1700-6). In this study, we employed Ar for the vapor molecules, and Ne for the NC gas molecules. The present method allowed us to count easily the evaporating, condensing, degassing, dissolving, and reflecting molecules in order to investigate the detailed motion of the molecules, and also to evaluate the velocity distribution function of the KBCs at the interface. Our results showed that the evaporation and condensation coefficients for vapor and NC gas molecules decrease with the increase in the molar fraction of the NC gas molecules in the liquid. We also found that the KBCs can be specified as a function of the molar fraction and liquid temperature. Furthermore, we discussed the method to construct the KBCs of vapor and NC gas molecules..

Medienart:

E-Artikel

Erscheinungsjahr:

2017

Erschienen:

2017

Enthalten in:

Zur Gesamtaufnahme - volume:21

Enthalten in:

Microfluidics and nanofluidics - 21(2017), 3 vom: 04. März

Sprache:

Englisch

Beteiligte Personen:

Kobayashi, Kazumichi [VerfasserIn]
Sasaki, Kiyofumi [VerfasserIn]
Kon, Misaki [VerfasserIn]
Fujii, Hiroyuki [VerfasserIn]
Watanabe, Masao [VerfasserIn]

Links:

Volltext [lizenzpflichtig]

BKL:

35.18$jKolloidchemie$jGrenzflächenchemie

50.94$jMikrosystemtechnik$jNanotechnologie

52.23$jFluidtechnik

Themen:

Binary mixture
Evaporation and condensation
Kinetic boundary conditions

Anmerkungen:

© Springer-Verlag Berlin Heidelberg 2017

doi:

10.1007/s10404-017-1887-6

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

OLC2110676582