Comparison of numerical results of molecular dynamics simulations and S- model kinetic equations for evaporation and condensation of Argon

M.C.W. Wolf, A. Polikarpov, A.J.H. Frijns, I. Graur, S.V. Nedea, R. Enright

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The applicability of the S-model kinetic equation for simulation of evaporation and condensation phenomena is investigated by comparing its results for Argon with those of Molecular Dynamics(MD). The steady-state evaporation and condensation between two liquid Argon layers, kept at different but constant temperatures, is simulated. The temperature ratio between the hot/cold Argon layers is fixed at and the rarefaction parameter is equal to , which corresponds to the beginning of transitional flow regime. The macroscopic profiles of temperature and heat flux in vapor between the liquid layers are depicted. Both methods predict an inverted temperature profile. The agreement between the methods depends on the evaporation/condensation coefficients and the temperature at the liquid boundaries. Therefore, it is important to obtain the evaporation/condensation coefficients and the positions of the liquid boundaries accurately.
Original languageEnglish
Title of host publicationProceedings of the 3rd European Conference on Non-Equilibrium Gas Flows
EditorsArjan Frijns, Stéphane Le Calvé, Dimitris Valougeorgis
Place of PublicationParis
ISBN (Electronic)979-10-93567-17-4
Publication statusPublished - 28 Feb 2018
Event3rd European Conference on Non-Equilibrium Gas Flows (NEGF18) - Strasbourg, France
Duration: 28 Feb 20182 Mar 2018
Conference number: 3


Conference3rd European Conference on Non-Equilibrium Gas Flows (NEGF18)
Abbreviated titleNEGF18
Internet address

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