Geo-4¶
Directory.¶
Data is stored in the following directory:
Available data.¶
The following data for analysis are aviable:
Parameter file (original): main_input.org
Checkpoint data directory: Checkpoints
Global averaged data directory: G_Avgs
Sphere averaged data directory: Shell_Avgs
Shell spectrum data directory: Shell_Spectra
Longitudinal averaged data directory: AZ_Avgs
Fields on spheres directory: Shell_Slices
Equatorial fields directory: Equatorial_Slices
Parameters.¶
The following parameters are used. See Input Parameters documentation for the definitions.
Name |
Parameter name |
Value |
|---|---|---|
\(N_{r}\) |
n_r |
256 |
\(N_{\theta}\) |
n_theta |
768 |
\(Np_{column}\) |
npcol |
128 |
\(Np_{row}\) |
nprow |
256 |
\(r_i / r_o\) |
aspect_ratio |
3.50E-01 |
\(r_o - r_i\) |
shell_depth |
1.00E+00 |
Chebyshev grid |
chebyshev |
.TRUE. |
rotation |
rotation |
.TRUE. |
magnetism |
magnetism |
.TRUE. |
viscous heating |
viscous_heating |
.FALSE. |
Ohmic heating |
ohmic_heating |
.FALSE. |
\(E\) |
Ekman_Number |
1.00E-06 |
\(Pr\) |
Prandtl_Number |
1.00E-01 |
\(Pm\) |
Magnetic_Prandtl_Number |
5.00E-02 |
\(Ra\) |
Rayleigh_Number |
2.50E+09 |
Non slip boundary |
no_slip_boundaries |
.TRUE. |
Fixed \(T\) at \(r_i\) |
fix_tvar_bottom |
.TRUE. |
\(T(r_i)\) |
T_bottom |
1.00E+00 |
Fixed \(T\) at \(r_o\) |
fix_tvar_top |
.TRUE. |
\(T(r_o)\) |
T_top |
0.00E+00 |
Reference type |
reference_type |
1 |
Heating type |
heating_type |
0 |
\(n_{g}\) |
gravity_power |
1.00E+00 |
Hyper-diffusion |
hyperdiffusion |
.TRUE. |
\(\alpha\) |
hyperdiffusion_alpha |
4.00E+00 |
\(\beta\) |
hyperdiffusion_beta |
7.00E+00 |
Examples of visualized images.¶
Time evolution of kinetic energy density \(E_{kin} = \frac{1}{2} u^{2}\) and magnetic energy density \(E_{mag} = \frac{1}{2Pm E} B^{2}\) in the spherical shell as function of time normalized by the viscous diffusion time \(\tau_{\nu} = L^{2} / \nu\) from the first data output time.
Time evolution of the ratio of magetic to kinetic energy densities \(E_{mag} / E_{kin}\) in the spherical shell as function of time normalized by the viscous diffusion time \(\tau_{\nu} = L^{2} / \nu\) from the first data output time.
Radial magnetic field \(B_r\) at \(r = r_o - 0.000\) and \(t = 8.947 \times 10^{-3}\)
Radial component of the velocity field \(u_r\) at \(r = r_o - 0.570\) and \(t = 8.947 \times 10^{-3}\)
Temperature \(T\) at \(r = r_o - 0.570\) and \(t = 8.947 \times 10^{-3}\)
Longitudinal average of Temperature \(T\), (left), zonal velocity field \(u_\phi\), (middle), and zonal magnetic field \(B_\phi\), (right) in the fluid shell at \(t = 8.947 \times 10^{-3} \tau_{\nu}\).
Radial component of the velocity field \(u_r\) (left), \(z\)-component of the magnetic field \(B_z\) (middle), and temperature \(T\) (right) at the equatorial plane \(z = 0.0\) and at \(t = 8.947 \times 10^{-3} \tau_{\nu}\).
Magnetic energy density spectra as a function of spherical harmonic degree \(l\) at \(r = r_o - 0.000\) and \(t = 8.947 \times 10^{-3}\)
Kinetic energy density spectra as a function of spherical harmonic degree \(l\) at \(r = r_o - 0.689\) and \(t = 8.947 \times 10^{-3}\)