  We investigate a coupled quintessence cosmological model in which a
dark-energy scalar field with an exponential potential interacts directly with
a dark-matter fluid through a dissipative term inspired by warm inflation. The
evolution equations of this model give rise to a three-dimensional dynamical
system for which a thorough qualitative analysis is performed for all values of
the relevant parameters. We find that the model is able to replicate the
observed sequence of late-time cosmological eras, namely, a long enough
matter-dominated era followed by a present era of accelerated expansion. In
situations where there is a significant transfer of energy from dark energy to
dark matter, temporary scaling-type solutions may arise, but, asymptotically,
all solutions are dominated by dark energy.
