摘要：A new method is proposed instead of the periodic boundary conditions in this study which treats the inlet or outlet boundaries with virtual following particles in the Smoothed Particle Hydrodynamics (SPH). The virtual following particles are those located outside the inlet or outlet boundaries and their velocities and positions are updated according to the corresponding interior particles. This method bases on the analysis of characteristics of laminar flow and is able to be applied in low Reynolds number flow which is laminar flow in the inlet or/and outlet boundaries. The Poiseuille flow and two-dimensional flow between two inclined plates are simulated, respectively with the proposed method and the results are in good agreement with theoretical values.
