  The topic of turbulent transport in a stellar radiative zone is vast and
poorly understood. Many physical processes can potentially drive turbulence in
stellar radiative zone but the limited observational constraints and the
uncertainties in modelling turbulent transport make it difficult to identify
the most relevant one. Here, we focus on the effect of stable stratification on
the radial turbulent transport of chemicals and more particularly on the case
where the turbulence is driven by a radial shear. Results of numerical
simulations designed to test phenomenological models of turbulent transport
will be presented. While this may appears little ambitious, stable
stratification will influence the radial turbulent transport whatever the
mechanism that drives the turbulent motions and the present considerations
should be useful for these other mechanism too.
