A new method of implementing no-slip boundary conditions in dissipative particle dynamics

It is difficult to impose the no-slip boundary conditions in Dissipative Particle Dynamics (DPD). In this work, we proposed a new method to impose the boundary conditions. The density fluctuation of the fluid particles can be adjusted by setting different conservative force coefficients between the solid wall and the fluid particles. The no-slip boundary conditions can be imposed when the density fluctuation is the feeblest. We demonstrated the validity of this approach by comparing the fluid properties obtained by simulating the Poiseuille flow using the new method and shear flow using the Lees-Edwards boundary conditions, respectively.