Third Symposium on Turbulence and Shear Flow Phenomena
DOI: 10.1615/TSFP3
SLIP-FLOW OVER LUBRICATED SURFACES
pages 881-886
DOI: 10.1615/TSFP3.1470
RESUMO
A direct numerical simulation (DNS) of a lubricated turbulent channel flow is performed. The lubricating film, present at both channel walls, is replaced by a new set of dynamic slip-flow boundary conditions imposed at the planar film-fluid interface. The proposed slip-flow boundary conditions are verified against a simulation where both the lubricating film and the bulk fluid have been solved within the DNS approach. Both turbulence statistics and instantaneous near-wall vortical structures are satisfactorily reproduced by the slip-flow boundary conditions.