Time evolution of the total turbulent kinetic energy (TKE). Left panel: Comparison of the TKE evolution for different opening angles with resolution of Δθ = 0.3°. The models are v036_6_150x20 (blue solid line), v036_9_150x30 (yellow dashed line), and v036_12_150x40 (green dotted line). Right panel: Same as left panel, but with the same opening angle (θ_with = 6°) and different resolutions: v036_6_150x20 (blue solid line), v036_6_150x30 (red dash-dotted line), and v036_6_150x40 (purple dotted line). The vertical dashed line denotes the end of τ_relax and the start of τ_stat.