hawkmoth hovering demo movie


Something like "clouds" are the iso-surface of the vorticity (in fact q-value),
and the colour contour on it represent the absolute flow velocity (nondimensionalised).

Flapping cycle T = 1/f =1/26 seconds, where f is the wingbeat frequency. Therefore, dimensionless time "t/T = 1" means "just at the end of 1st wingbeat cycle".