Power spectrum associated with the s = 2, n = 7 Chevalier solution. Left: velocity power spectra at different computational resolutions. The dark line tracing the data is the data smoothed via a Gaussian smoothing process used throughout the rest of this work for visualization purposes. Right: the smoothed power spectra of density (green) and velocity (purple) for the high-resolution model. Dashed lines trace the slopes of the characteristic power laws and the solid vertical line denotes the dominant mode, l ₀, at which they break. The secondary peak at high l is caused by the grid scale.