Showcase · fluid
Taylor-Green Vortex
A periodic vortex lattice decays under viscosity. Colour is vorticity magnitude; the solver is the same BDF2 Navier-Stokes path gated against the analytic Taylor-Green solution.
Incompressible Navier–Stokes with BDF2 stepping and a block Schur
preconditioner — the periodic box keeps the focus on the time scheme and
the viscous decay rate, which QA checks against the closed-form
Taylor–Green answer. Regenerate the film with just website-demos taylor-green.