Abstract:

Velocity slippage on a solid wall is usually neglected in macroscopic flow. However, the effect of slippage on the fluid dynamics can be significant in a microscopic scale. Therefore, slip condition at solid boundary should be considered in microscopic or mesoscopic hydrodynamics. Dissipative particle dynamics (DPD) is a promising approach to the study of mesoscale hydrodynamic behaviors. Noslip boundary conditions are widely used in previous DPD simulations. A numerical method for imposing slip boundary conditions was proposed in the DPD simulation. To show validity of the approach, velocity profiles obtained by DPD are found to be consistent with the analytic solutions based on Navier condition for the Poiseuille flow.

Key words: slip; boundary conditions; dissipative particle dynamics; mesoscopic