Patterns formed due to 3D chaotic mixing during
tests of the first cavity developed for blending research. The cavity has
no internal parts such as impellars so that castings can be more readily
removed after structured polymeric melts are solidified.
Reference: K. C. Miles, B. Nagarajan, and D. A. Zumbrunnen,
"Three-Dimensional Chaotic Mixing of Fluids in a Cylindrical Cavity," Journal
of Fluids Engineering, Vol. 117, pp. 582-588, 1995.