Study the time evolution of nanofluid flow in a microchannel with various sizes of Fe nanoparticle using molecular dynamics simulation

摘要

In the computational study, the MD approach is used. MD simulations express that by adding Fe nanoparticles to base-fluid the highest rate of velocity/ temperature of base fluid 12%/37% increases. This atomic behavior has importance in industrial applications of nanofluids. Further, our simulations express that the temperature, velocity and density profiles of water/Fe nanofluid in Fe microchannel are enhanced by the radius of nanoparticles rising. Numerically, by nanoparticle radius enhancing from 10 A to 20 A, the maximum density of nanofluid rises from 0.033 to 0.048. Further, the highest rate of nanofluid particle velocity enhances from 0.038 A /fs to 0.054 A /fs. Through velocity enhancing, the temperature of simulated structures increases to 954 K, and phase transition occurring on the nanofluid structure. Physically, the size of simulated nanoparticle has an important effect on fluid flow and transition phase of this atomic structure. The time of transition in the simulation box varies from 0.5 ns to 0.38 ns. Hence, we underestand adding nanoparticle to base fluid improves the thermal manner of this structure.