Volume 48, Number 1, October I 1999
|Page(s)||1 - 7|
|Published online||01 September 2002|
Kinetic theory for dissipative particle dynamics: The importance of collisions
Department of Chemistry, University of Manchester Oxford Road, Manchester, M13 9PL, UK
2 Unilever Research Port Sunlight Laboratory Quarry Road East, Bebington, Wirral, L63 3JW, UK
Accepted: 26 July 1999
Kinetic theory of dissipative particle dynamics is developed in terms of a pair collision theory. The kinetic transport coefficients are computed from explicit collision integrals and compared favourably with detailed simulations. Previous theory is found to correspond to a weak scattering limit, or Vlasov theory, and previously reported discrepancies with simulations are thereby largely resolved. In the large dissipation limit, we find that qualitatively new scaling behaviour for the transport coefficients is indicated.
PACS: 02.70.Ns – Molecular dynamics and particle methods / 05.40.-a – Fluctuation phenomena, random processes, noise, and Brownian motion / 66.20.+d – Viscosity of liquids, diffusive momentum transport
© EDP Sciences, 1999
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