  We demonstrate that Multi-Body Dissipative Particle Dynamics (MDPD) can be
used as an efficient computational tool for the investigation of nanoscale
capillary impregnation of confined geometries. As an essential prerequisite, a
novel model for a solid-liquid interface in the framework of MDPD is
introduced, with tunable wetting behaviour and thermal roughening to reduce
artificial density- and temperature oscillations. Within this model, the
impregnation dynamics of a water-like fluid into a nanoscale slit pore has been
studied. Despite the coarse graining implied with the model fluid, a sufficient
amount of non-equilibrium averaging can be achieved allowing for the extraction
of useful information even from transient simulations, such as the dynamic
apparent contact angle. Although it is found to determine the capillary driving
completely, it cannot be intepreted as a simple function of the capillary
number.
