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
DFD particles is stuck on the boundary. By taking a continuum limit of this
layer effective dissipative and stochastic forces on the fluid DPD particl
es are obtained. The boundary model is tested by a simulation of planar Cou
ette flow which allows the performance of vicosimetric measurements. We ana
lyze the conditions that ensure a proper stick boundary condition for an im
penetrable wall, comparing with previous methods used.