Boundary Models in DPD

M. Revenga, I. Zúñiga, P. Español () and I. Pagonabarraga
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M. Revenga: Departamento de Física Fundamental, UNED, Apartado 60141, Madrid 28080, Spain
I. Zúñiga: Departamento de Física Fundamental, UNED, Apartado 60141, Madrid 28080, Spain
P. Español: Departamento de Física Fundamental, UNED, Apartado 60141, Madrid 28080, Spain
I. Pagonabarraga: Instituut-AMOLF, Kruislaan, 407, 1098SJ Amsterdam, The Netherlands

International Journal of Modern Physics C (IJMPC), 1998, vol. 09, issue 08, 1319-1328

Abstract: We present a model for treating solid boundaries of a DPD fluid. The basic idea is to model the stick boundary conditions by assuming that a layer of DPD particles is stuck on the boundary. By taking a continuum limit of this layer effective dissipative and stochastic forces on the fluid DPD particles are obtained. The boundary model is tested by a simulation of planar Couette flow which allows the performance of vicosimetric measurements. We analyze the conditions that ensure a proper stick boundary condition for an impenetrable wall, comparing with previous methods used.

Keywords: Mesoscopic Computer Simulations; Boundary Conditions (search for similar items in EconPapers)
Date: 1998
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DOI: 10.1142/S0129183198001199

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