Observation of chaotic bursting and attractor switching in a fluid

Journal Article · Wed Jul 15 00:00:00 EDT 1992 · Physical Review A. General Physics; (United States)

DOI:https://doi.org/10.1103/PhysRevA.46.R711· OSTI ID:7285445

Metcalfe, G; Behringer, R P ^[1]

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1. Department of Physics and Center for Nonlinear Studies, Duke University, Durham, North Carolina 27706 (United States)

We report observations of chaotic bursting in a fluid, a convecting layer of {sup 3}He--superfluid-{sup 4}He. At an aspect ratio {Gamma}=6.0 and Prandtl number Pr=0.3 we find intermittent bursts out of a fully developed chaotic state. Above the onset of bursting the average length of a burst-free region varies as ({ital R}{minus}{ital R}{sub {ital b}}){sup {minus}{gamma}} with {gamma}=4.6. The average length of a burst varies as ({ital R}{minus}{ital R}{sub {ital b}}){sup {delta}} with {delta}=2.0. A particularly novel state was seen for {Gamma}=4.25 and Pr=0.12, where there occurs a reversible switching transition involving two chaotic attractors.

• OSTI ID: 7285445
• Journal Information: Physical Review A. General Physics; (United States), Vol. 46:2; ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
HELIUM 3
CONVECTIVE INSTABILITIES
HELIUM 4
BINARY MIXTURES
PRANDTL NUMBER
SUPERFLUIDITY
DISPERSIONS
EVEN-EVEN NUCLEI
EVEN-ODD NUCLEI
HELIUM ISOTOPES
INSTABILITY
ISOTOPES
LIGHT NUCLEI
MIXTURES
NUCLEI
PLASMA INSTABILITY
STABLE ISOTOPES
665420* - Superfluidity- (1992-)