sft2d.calculate_advection

sft2d.calculate_advection(field, differential_rotation, meridional_flow, grid)

Computes the advection of the magnetic field due to differential rotation and meridional flow.

Parameters:

• field (np.ndarray) – The magnetic field on the grid (2D array).

• differential_rotation (np.ndarray) – Angular velocity profile (1D array).

• meridional_flow (np.ndarray) – Meridional flow profile (1D array).

• grid (dict) – Dictionary containing grid information (‘theta’, ‘phi’, and their spacings).

Returns:

Updated magnetic field after applying advection.

Return type:

np.ndarray