Figure 2.
The two-panel vector field map shows magnetic flux density distributions across circular surfaces. Panels A and B contain circular regions filled with arrows representing field direction and magnitude. A colour scale above each panel ranges from 0.00 to 0.700 tesla. In Panel A, most arrows across the central region correspond to values near 0.525 tesla, while lower values occur near the perimeter. In Panel B, higher field intensities approaching 0.700 tesla appear near the upper and lower central regions, with intermediate values across most of the interior and lower values around the edges. The arrows illustrate the spatial variation of magnetic flux density across the circular sections.Real part of the magnetic flux density from 1-Hz finite element simulations; (a) Uniform excitation, (b) Polar-focused excitation