Abstract
Dissipative particle dynamics (DPD) has been regarded as one of an effective simulation method for mesoscopic system because the treatment of multi-body hydrodynamic interactions among particles is easy. Traditionally, DPD simulations have been used only for simulation of uniform temperature system because the temperatures of each particle are not defined. In this paper, energy conserved DPD simulation for one dimensional unsteady heat conduction problem has been conducted in order to verify the applicability for energy transport process. Energy conserved DPD simulation is accomplished by introducing an internal energy of each particles and the temperature of each particles are connected with internal energy. DPD simulation result of unsteady temperature response is compared with analytical solution of heat conduction equation and it is found that both results agree well. Furthermore, thermal conductivities are calculated from simulation results of steady heat conduction. It is clarified that the thermal conductivity of simulation system in DPD simulation is easily controllable by adjusting the energy transport coefficient k_o in formula of energy exchange between particles.
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