  The so-called Landau-Levich-Deryaguin problem treats the coating flow
dynamics of a thin viscous liquid film entrained by a moving solid surface. In
this context, we use a simple experimental set-up consisting of a
partially-immersed rotating disc in a liquid tank to study the role of inertia,
and also curvature, on liquid entrainment. Using water and UCON$^{\mbox{{TM}}}$
mixtures, we point out a rich phenomenology in the presence of strong inertia :
ejection of multiple liquid sheets on the emerging side of the disc, sheet
fragmentation, ligament formation and atomization of the liquid flux entrained
over the disc's rim. We focus our study on a single liquid sheet and the
related average liquid flow rate entrained over a thin disc for various
depth-to-radius ratio $h/R < 1$. We show that the liquid sheet is created via a
ballistic mechanism as liquid is lifted out of the pool by the rotating disc.
We then show that the flow rate in the entrained liquid film is controlled by
both viscous and surface tension forces as in the classical
Landau-Levich-Deryaguin problem despite the three dimensional, non-uniform and
unsteady nature of the flow, and also despite the large values of the film
thickness based flow Reynolds number. When the characteristic Froude and Weber
numbers become significant, strong inertial effects influence the entrained
liquid flux over the disc at large radius-to-immersion-depth ratio, namely via
entrainment by the disc's lateral walls and via a contribution to the flow rate
extracted from the 3D liquid sheet itself, respectively.
