Figure 10.

Spiral wave drift on two-dimensional surfaces of different shape and anisotropy. Simulations in the Aliev-Panfilov model with parameter a = 0.03 (left column) and a = 0.08 (right column). Top row represents the results for the paraboloidal shape z = (x ² + y ²)/120 mm. The middle row shows drift on an anisotropic plane with circumferential fibres: $\overrightarrow{e_f}=\overrightarrow{e_{\phi }}$, D _f = 12, and D _a = 4. The bottom row combines circumferential fibres with paraboloid shape. Simulations run on a domain of size 200 mm for 30 s. The red line indicates tip positions close to the end of the simulation. Numerical methods are described in [13].