Numerical simulation of heat transfer in a parallel plate channel and promote dissipative particle dynamics method using different weight functions

摘要

In this paper heat transfer in a channel with parallel plates has been studied using Dissipative Particle Dynamics with energy conservation (eDPD). To simulate and present different thermal flows in finite geometries, a computer program was developed. The thermal boundary condition of the wall is assumed to be a constant temperature. Each particle in contact with the wall achieves the wall temperature. Also periodic boundary condition in the direction of the flow of the solution domain and no-slip boundary condition on the walls have been considered. The no-slip boundary condition is possible by freezing the layers of particles on the walls and applying bounce-back reflection. The results show dimensionless temperature and velocity profiles perpendicular to the direction of the flow along the channel. Finally, in this research it is tried to endeavored the fluctuations near the wall and promote the method by proposing different weight functions. Four different weight functions were used and the results on the velocity and temperature profiles were investigated. All of the results in the present work were compared and verified with the previous results.