  Some effects of irradiation on time-dependent accretion-disk models for black
hole X-ray novae are presented. Two types of irradiation are considered: direct
irradiation from the inner hot disk and indirect irradiation as might be
reflected by a corona or chromosphere above the disk. The shadowing effect of
the time-dependent evolution of the disk height and consequent blocking of the
outer disk by the inner and middle portions of the disk from the direct
irradiation is included. The direct irradiation of the disk by inner layers
where the soft X-ray flux is generated is found to have only a small effect on
the outer disk because of shadowing. Mild indirect irradiation that flattens,
but otherwise does not affect the light curve substantially, still has
interesting non-linear effects on the structure of the disk as heating and
cooling waves propagate. The irradiated disks do not always make simple
transitions between the hot and cold states, but can linger at intermediate
temperatures or even return temporarily to the hot state, depending on the
irradiation and the activity in adjacent portions of the disk.
