  Direct numerical simulations are carried out to investigate the effect of the
wall temperature on the behavior of oblique shock-wave/turbulent boundary layer
interactions at freestream Mach number $2.28$ and shock angle of the wedge
generator $\varphi = 8^{\circ}$. Five values of the
wall-to-recovery-temperature ratio ($T_w/T_r$) are considered, corresponding to
cold, adiabatic and hot wall thermal conditions. We show that the main effect
of cooling is to decrease the characteristic scales of the interaction in terms
of upstream influence and extent of the separation bubble. The opposite
behavior is observed in the case of heating, that produces a marked dilatation
of the interaction region. The distribution of the Stanton number shows that a
strong amplification of the heat transfer occurs across the interaction, and
the maximum values of thermal and dynamic loads are found in the case of cold
wall. The analysis reveals that the fluctuating heat flux exhibits a strong
intermittent behavior, characterized by scattered spots with extremely high
values compared to the mean. Furthermore, the analogy between momentum and heat
transfer, typical of compressible, wall-bounded, equilibrium turbulent flows
does not apply for most part of the interaction domain. The pre-multiplied
spectra of the wall heat flux do not show any evidence of the influence of the
low-frequency shock motion, and the primary mechanism for the generation of
peak heating is found to be linked with the turbulence amplification in the
interaction region.
