Controlling density fluctuations in wall-bounded dissipative particle dynamics systems.

Igor V Pivkin; George Em Karniadakis

doi:10.1103/physrevlett.96.206001

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Controlling density fluctuations in wall-bounded dissipative particle dynamics systems.

Igor V Pivkin·George Em Karniadakis

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Abstract

Dissipative Particle Dynamics (DPD) simulations of wall-bounded flows exhibit density fluctuations that depend strongly on the no-slip boundary condition and increase with the level of coarse graining. We develop an adaptive model for wall-particle interactions that eliminates such oscillations and can target prescribed density profiles. Comparisons are made with ideal no-slip boundary conditions and molecular dynamics simulations. The new model is general and can be used in other coarse-grained particle methods.

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DNA Microfluidic Analytical Techniques Models, Biological Models, Chemical Particle Size Viscosity Water Journal Article Research Support, U.S. Gov't, Non-P.H.S.

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Igor V Pivkin, George Em Karniadakis. 2006-05-26. Controlling density fluctuations in wall-bounded dissipative particle dynamics systems.. https://doi.org/10.1103/physrevlett.96.206001

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