Open question (to be addressed with the simulations)

• Velocity amplitudes? Time scales? Vertical scales?
• Dependence on T_eff, logg?
• Dependence on numerical parameters (particularly the upper boundary condition)?
• Vertical mixing of dust by shear-flow induced turbulence?
• Contribution to microturbulence?

More open question

• Size, shape, and dynamics of large-scale flow patterns (on a rotating star)?
• Could the horizontal flows account for observed structures and variability?
• Are the strong horizontal flows in the coolest models credible?