# Gallery

Rendering was done in OpenDX.

### Output from demo_dino.py.

This demo solves the Helmholtz equation in a dinosaur shaped domain. The unstructured mesh has 826
triangles.

### Output from demo_RealisticIreg.py.

Here the Helmholtz equation (with k = 2*pi) is solved on a realistic plasma and limiter geometry. Dirichlet boundary condition are set to 1.0 on the plasmaand 0.0 on the limiter. The unstructured mesh has 556 triangles.

### Output from wire.py.

Complex eigenvalue problem. The equation is of Helmholtz type with
zero Dirichlet conditions on the internal boundary and phase shifted
conditions on the outer edges. Represented is a higher order mode: the
surface height corresponds to the mode amplitude whereas the colored
contours represent the phase. Regions with accumulation of red-blue
contours are associated with a phase transition from pi to -pi. Rendering
in OpenDX.

### Output from demo_hexa.py.

Solve Helmholtz's equation on a hexagonal shaped domain to recover
Christopherson's well known pattern cell solutions.
(D G Christopherson, Quart. J. of Math., 11, 63-65 (1941)).
The unstructured mesh has 675 triangles.