These patterns, in turn, provide the dynamical templates by which one can begin to understand the chaotic advection
of particles in a vortex-dominated flow.
A different but complementary mechanism is that of laminar, chaotic advection (Aref 1984, Ottino 1989) in which chaotic particle paths can be used to enhance heat transfer (Acharya et al.
1997, "The Effects of Chaotic Advection on Heat Transfer," Int.
The process of chaotic advection
is characterized by recursive stretching and folding of compounds in a fluid-like state, forming and reforming a complicated network structure.
A sampling of topics includes: the Delay logistic model, three- dimensional and higher-dimensional models, non-chaotic systems, rotations, shape and form, chaotic advection
, and chaos in galaxies and related simulations.
Chaotic advection has become an important sub-field of fluid mechanics (9).
Rapid refinement was an outcome of chaotic advection so that the devices were effective with internal geometries much simpler than those of extruders.
Their mixing chambers, which amount to less than 1/100,000 of a cubic cm, use chaotic advection
to mix the drugs in only 30 sec.
The melt streams to be combined are each fed by their respective extruders into the "smart blender," a barrel or cylinder containing two or more independently rotating stir rods that cause the chaotic advection
motion and create a defined melt structure rather than a homogeneous blend.
By alternately driving the inner and outer cylinders at low speed, Ottino can produce chaotic advection
of fluid particles throughout most of the fluid volume.
with National Science Foundation support, the SmartBlender uses a principle of fluid dynamics known as chaotic advection
to fold a masterbatch or other component into a matrix polymer.
The body of the device consists of a cylinder containing rods that simultaneously rotate and revolve as a group, thereby stretching and folding the two melts together by chaotic advection