Mixing of nanofluids: Molecular dynamics simulations and modelling

Jesper Schmidt Hansen (1) , Annie Lemarchand (1)

1 LPTMC - Laboratoire de Physique Théorique de la Matière Condensée

In this paper we study a mixing scheme, which has recently been proposed for microfluids, on the nanoscale. We do this by performing a series of nonequilibrium molecular dynamics simulations. On the nanoscale the chaotic mixing regime is captured. We discover a new phenomenon where the two mixing fluids exchange positions after leaving the mixing intersection. The results from the molecular dynamics simulations also reveal complex spatio-temporal stream velocity profiles generated by the mixing device. We find that these profiles can be modelled through an approximate analytical solution to the Navier-Stokes equation.

Mots clés: Physical Sciences

Jesper Schmidt Hansen, Annie Lemarchand. Mixing of nanofluids: Molecular dynamics simulations and modelling. Molecular Simulation, 2006, 32 (06), pp.419-426. ⟨10.1080/08927020600823141⟩. ⟨hal-00514984⟩