Table 1
Specifying the simulation parameters for the convective flows.
| Run | λ | Grid | γ | m | θ | κ | σ | Ra | Re | U rms | t conv | ρ mid |
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| A1 | 4 | 256 × 256 × 96 | 5/3 | 1.0 | 3.0 | 0.00548 | 1.5 | 2.0 × 105 | 93 | 0.315 | 3.17 | 2.418 |
| A2 | 4 | 256 × 256 × 96 | 5/3 | 1.0 | 3.0 | 0.00548 | 1.0 | 3.0 × 105 | 160 | 0.363 | 2.75 | 2.416 |
| A3 | 4 | 256 × 256 × 120 | 5/3 | 1.0 | 3.0 | 0.00548 | 0.5 | 6.0 × 105 | 344 | 0.390 | 2.56 | 2.416 |
| A4 | 4 | 256 × 256 × 120 | 5/3 | 1.0 | 3.0 | 0.00548 | 0.375 | 8.0 × 105 | 483 | 0.411 | 2.43 | 2.416 |
|
|
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| B1 | 10 | 512 × 512 × 96 | 5/3 | 1.0 | 3.0 | 0.00548 | 1.5 | 2.0 × 105 | 95 | 0.322 | 3.10 | 2.420 |
| B2 | 10 | 512 × 512 × 96 | 5/3 | 1.0 | 3.0 | 0.00548 | 1.0 | 3.0 × 105 | 156 | 0.353 | 2.83 | 2.417 |
| B3 | 10 | 512 × 512 × 120 | 5/3 | 1.0 | 3.0 | 0.00548 | 0.5 | 6.0 × 105 | 350 | 0.397 | 2.52 | 2.416 |
| B4 | 10 | 512 × 512 × 120 | 5/3 | 1.0 | 3.0 | 0.00548 | 0.375 | 8.0 × 105 | 485 | 0.413 | 2.42 | 2.414 |
|
|
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| C1 | 20 | 512 × 512 × 96 | 5/3 | 1.0 | 3.0 | 0.00548 | 1.5 | 2.0 × 105 | 95 | 0.322 | 3.10 | 2.421 |
| C2 | 20 | 512 × 512 × 96 | 5/3 | 1.0 | 3.0 | 0.00548 | 1.0 | 3.0 × 105 | 156 | 0.353 | 2.83 | 2.419 |
Notes. The parameters are as defined in the text – the quoted values for Re, Urms, tconv, ρmid have all been time-averaged. Grid resolutions are given in the form Nx × Ny × Nz. Some of the higher Rm dynamo calculations are carried out on a 2Nx × 2Ny × Nz grid (where necessary, the interpolation of the flow onto a finer mesh is carried out in Fourier space before the magnetic field is introduced).
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