Vertical magnetic field, B_z, for the K8V stellar model during the saturation phase of the SSD in the high photosphere (z = 183 km). Clockwise and counterclockwise vortices identified by the SWIRL algorithm in the horizontal plane are indicated by pink and green disks, respectively. The blue square in the left panel marks the boundaries of the zoomed region shown in the right panel, where the horizontal component of the velocity field at z = 183 km is represented by blue instantaneous streamlines.