  In this Part 2 we study further experimental properties of two-layer exchange
flows in a stratified inclined duct (SID), which are turbulent,
strongly-stratified, shear-driven, and continuously-forced. We analyse the same
state-of-the-art data sets using the same core shear layer methodology as in
Part 1, but we focus here on turbulent energetics and mixing statistics. The
detailed analysis of kinetic and scalar energy budgets reveals the specificity
and scalings of SID turbulence, while energy spectra provide insight into the
current strengths and limitations of our experimental data. The anisotropy of
the flow at different scales characterises the turbulent kinetic energy
production and dissipation mechanisms of Holmboe waves and turbulence. We then
assess standard mixing parameterisations models relying on uniform eddy
diffusivities, mixing lengths, flux parameters, buoyancy Reynolds numbers or
turbulent Froude numbers, and we compare representative values with the
stratified mixing literature. The dependence of these measures of mixing on
controllable flow parameters is also elucidated, providing asymptotic estimates
that may be extrapolated to more strongly turbulent flows, quantified by the
product of the tilt angle of the duct and the Reynolds number. These insights
may serve as benchmark for the future generation of experimental data with
superior spatio-temporal resolution required to probe increasingly vigorous
turbulence.
