  Aims: To investigate the stability and angular momentum transport by the
strato-rotational instability in the nonlinear regime. Methods: The
hydrodynamic compressible equations are solved in a cartesian box in which the
outer cylinder is embedded. Gravity along the rotation axis leads to density
stratification. No-slip boundary conditions are used in the radial direction,
while free-slip conditions are used on the two ends of the cylinders. Results:
The strato-rotational instability is confirmed and the Reynolds stress is shown
to transport angular momentum away from the axis. However, the growth rate
decreases with increasing Reynolds number. This, as well as the presence of
boundaries renders this instability less relevant for astrophysical
applications.
