Fig. 3

Velocity fields and contours of the magnitude of the azimuthal velocity. Velocity fields and contours of the magnitude of the azimuthal velocity component on the equatorial plane orthogonal to the axis of rotation, at t=π (i.e. the time of maximum negative angular velocity) with A=0.035 rad and: a ω=6.28 rad/s, b ω=43.98 rad/s. Solution s4. The velocity magnitude is scaled with the maximum wall velocity, the radial co-ordinate with the eye model radius and time with the inverse of the angular frequency