  We study experimentally the shape of a granular heap formed pouring a
granular material into a vertical Hele-Shaw cell and analyze the effect of the
grain impact energy. We propose a continuous model for the steady profile of
the heap that explicitly considers energy dissipation of flowing grains through
inelastic collisions. We solve the model analytically and analyze the resulting
height profile as a function of several parameters, such as the restitution
coefficient of the grains and their impact energies. We find good agreement
between theory and experiments.
