Table 1: Computational domains for the 2π/10, 2π/70, 2π/80 and 2π/90 cases. The parameters are the azimuthal division number β, the radial, azimuthal and wall-normal grid numbers Nr, and Nz, respectively, and the grid resolutions ∆r, ∆θ, z0 and a.

β (r,θ, z) Nr × Nθ × Nz (r,θ,z0 ,a)
10 r [330,751]θz [0,22.4] 422 × 469 × 50 r = 1θ = z0 = 0.05, (a = 1.0750)
70 r [330,751]θz [0,22.4] 422 × 73 × 50 r = 1θ = z0 = 0.05, (a = 1.0750)
80 r [330,751]θz [0,22.4] 422 × 61 × 50 r = 1θ = z0 = 0.05, (a = 1.0750)
90 r [330,751]θz [0,22.4] 422 × 61 × 50 r = 1θ = z0 = 0.05, (a = 1.0750)