Left: streamline sets from taylorgreen_6.vti and taylorgreen_8.vti overlaid in one 3D view using the vector field
(vx, vy, vz) = (ux, uy, uz). Right: line chart of vort_mean and critq_mean versus t from tg_stats.csv.
Streamlines at t=6
Streamlines at t=8
vort_mean
critq_mean
The two statistics are plotted on separate y-axes because vort_mean is positive while critq_mean is negative and differs in scale.