Tests performed for different polytropic indices n, where γ = 1+1/n, the exponent of the polytropic equation of state. Left: Polytropic density structures as a function of radius for the 6.84 R_⊙ models. Density is given in units of ρ_c, the central density. Each curve is labeled with its corresponding value of n. The vertical lines indicate the base of layers for layer thickness ΔR/R₁ = 0.06. Right: Azimuthally averaged angular velocity ⟨ω″⟩ for n = 1.5 (square, Case 1), 3.0 (triangle, Case 32b) and 4.5 (large cross, Case 51). Illustrated are the values for times t/day = 4, 36, 76, and 197 after the start of the calculation, showing that all cases converge toward average uniform rotation. The initial ω″ profile is shown with the asterisks joined by a continuous line.