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Table 1.

Parameters for compressible hydrodynamic simulations of the young Sun.

Dimensions Ri/R Ro/R Δr/R ϕ (°) Δθ (°) τconv(106 s) Time span (τconv)
wide3D 3D 0.21 1.00 28 × 10−4 140 0.55 0.70 ± 0.04 4.09
deep3D 3D 0.10 1.00 28 × 10−4 30 0.55 0.77 ± 0.03 4.05
short3Da 3D 0.31 0.67 28 × 10−4 140 0.55 4.47 ± 1.67 3.36
short3Db 3D 0.31 0.67 28 × 10−4 140 1.10 5.71 ± 1.71 8.30

wide2D 2D 0.21 1.00 28 × 10−4 0 0.55 0.79 ± 0.07 104
deep2D 2D 0.10 1.00 28 × 10−4 0 0.55 0.94 ± 0.13 284
short2Da 2D 0.31 0.67 28 × 10−4 0 0.55 2.20 ± 0.29 121
short2Db 2D 0.31 0.67 28 × 10−4 0 1.10 2.57 ± 0.32 174

Notes. The inner Ri and outer Ro radius of the spherical shell, and the radial grid spacing Δr in the convection zone are given in units of the total radius of the young Sun R. The angular extent of the simulation in the 3rd direction is ϕ, and the grid spacing in both angular directions is Δθ. The average global convective turnover time τconv is provided, and the total time span for each simulation is given in units of the convective turnover time.

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