Motivation

Using the same boundary conditions, different hydrocodes (implemented differently) and that are running from the same initial conditions should lead to different evolutions. The differences in the growth of the instability, after the linear stage, should reveal differences in the numerical schemes and the way the non linear hydrodynamic equations are solved.

One expects each code to describe a bit differently the various sequences of the evolution. For example differences in the way to treat the shocks could lead to significant differences in the transport of the angular momentum and the migration of the vortices.

• To find differences in the growth of the instability and the evolution of the vortices
• To evaluate and compare the performances of the different codes