Temperature, surface roughness and anisotropy effects on the tangential momentum accomodation coefficient between Pt(100) AND Ar - Theoretical chemistry Accéder directement au contenu
Ouvrages Année : 2012

Temperature, surface roughness and anisotropy effects on the tangential momentum accomodation coefficient between Pt(100) AND Ar

Quy-Dong To
Guy Lauriat
  • Fonction : Directeur scientifique
  • PersonId : 926802
Céline Léonard
V. H. Vo
  • Fonction : Directeur scientifique
  • PersonId : 930279

Résumé

In this paper, we study the influence of Platinum (100) surface morphology on the Tangential Momentum Accommodation Coefficient (TMAC) with Argon usingMolecular Dynamics method (MD). The coefficient is computed directly by beaming Ar atoms into the surfaces and measuring the relative momentum changes. The wall is maintained at a constant temper-ature and its interaction with the gas atoms is governed by the Kulginov potential [1]. To capture correctly the surface effect of the walls and atoms trajectory, the Quantum Sutton-Chen multi-body potential is employed between the Pt atoms [2]. Effects of wall surface morphology and incident direction, temperature are considered in this work and provide full information of gas-wall interaction.
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Dates et versions

hal-00749274 , version 1 (07-11-2012)
hal-00749274 , version 2 (21-11-2012)

Identifiants

  • HAL Id : hal-00749274 , version 1

Citer

T. Tung Pham, Quy-Dong To, Guy Lauriat, Céline Léonard, V. H. Vo (Dir.). Temperature, surface roughness and anisotropy effects on the tangential momentum accomodation coefficient between Pt(100) AND Ar. Proceedings of the 3 rd European Conference on Microfluidics - Microfluidics 2012 - Heidelberg, December 3-5, 2012, pp.12, 2012. ⟨hal-00749274v1⟩
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