Couette flow of pentane in clay nanopores: Molecular dynamics simulation

•Viscosity and slip behavior of n-pentane in clay slit pores are studied.•Viscosity-density dependency is almost the same in 3–7 nm pores as in bulk liquid.•Slip length walls is ∼0.3nm at non-hydrated walls, no slip is observed at hydrated walls.•The ordering of molecules is stronger in pores with non-hydrated walls.