Coarse-Graining of a Fluid and its Relation with Dissipative Particle Dynamics and Smoothed Particle Dynamic

Pep Español (), Mar Serrano () and Ignacio Zuñiga ()
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Pep Español: Departamento de Física Fundamental, Universidad Nacional de Educación a Distancia, Apt. 60141, Madrid 28080, Spain
Mar Serrano: Departamento de Física Fundamental, Universidad Nacional de Educación a Distancia, Apt. 60141, Madrid 28080, Spain
Ignacio Zuñiga: Departamento de Física Fundamental, Universidad Nacional de Educación a Distancia, Apt. 60141, Madrid 28080, Spain

International Journal of Modern Physics C (IJMPC), 1997, vol. 08, issue 04, 899-908

Abstract: We propose a coarse-graining procedure for a fluid system that allows us to discuss from a conceptual point of view different "mesoscopic" approaches to hydrodynamic problems. Dissipative Particle Dynamics (DPD) and Smoothed Particle Dynamics (SPS) are discussed simultaneously within this framework. In particular, we give physical meaning to the weight function used in SPD. The close analogy between DPD and SPD suggests a synthesis of both approaches that overcomes the conceptual shortcomings of both.

Keywords: Molecular Dynamics; Dissipative Particle Dynamics; Hydrodynamics (search for similar items in EconPapers)
Date: 1997
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DOI: 10.1142/S0129183197000771

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