https://numdam.org/articles/10.1016/j.crma.2008.07.012/
A generic incompressible flow is topological mixing
incompressible flowtopological mixinggeneric
https://vtechworks.lib.vt.edu/items/4481d817-35b6-4c3e-867d-c1749a39545d/full
Topological Chaos And Mixing in a Three-Dimensional Channel Flow
Passive mixing is investigated in a mathematical model of steady, three-dimensional, laminar flow through a rectangular channel. Efficient stirring is achieved...
in athree dimensionaltopologicalchaosmixing