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Zoology and wildlife conservation

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Abstracts » Zoology and wildlife conservation

Chaos and threshold for irreversibility in sheared suspensions

Article Abstract:

An experiment showing precisely how time reversibility fails for slowly sheared suspensions is presented. By comparing experimental and numerical results, the threshold strain associated with a pronounced growth in the Lyapunov exponent is demonstrated and the comparison also illuminates the connections between chaos, reversibility and predictability.

Author: Gollub, J.P., Pine, D.J., Brady, J.F., Leshansky, A.M.
Publisher: Macmillan Publishing Ltd.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2005
United States, Analysis, Shear (Mechanics), Shear flow, Liapunov functions

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Persistent patterns in transient chaotic fluid mixing

Article Abstract:

A 2-dimensional fluid layer, electromagnetically powered, is used to investigate advective stretching of fluids and molecular diffusion. The experiment shows that chaotic mixing, resulting from time-periodic cellular flows, produces an extraordinary persistent spatial structure, with a surprisingly recurrent pattern.

Author: Gollub, J.P., Rothstein, D., Henry, E.
Publisher: Macmillan Publishing Ltd.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1999
Molecular electronics, Fluids

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Chaos in space and time

Article Abstract:

Chaotic space and time variations of a heated fluid have been investigated using a nonlinear dynamics method that could ultimately be applied to natural systems, such as the weather.

Author: Gollub, J.P., Cross, M.C.
Publisher: Macmillan Publishing Ltd.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2000
Chaos theory, Chaotic systems

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Subjects list: Research
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