Accession Number:

ADA210969

Title:

Symmetry Breaking Bifurcations and the Growth of Chaos in a Rotating Fluid

Descriptive Note:

Final rept. 1 Jun 1986-31 Dec 1989

Corporate Author:

TEXAS UNIV AT AUSTIN DEPT OF PHYSICS

Personal Author(s):

• Swinney, Harry L.

Report Date:

1989-08-01

Pagination or Media Count:

8.0

Abstract:

Laboratory experiments and numerical simulation on flow between concentric independently rotating cylinders the Couette-Taylor system reveal a primary bifurcation to a new state, ribbons, which are traveling waves in the azimuthal direction but standing waves in the axial direction. Other experiments, conducted on a rigid rapidly rotating annulus, are designed to explore parameter regimes characteristics of planetary scale flows. Eastward jets are found to exhibit Rossby waves for a wide range of control parameters, and these jets or, more precisely, the potential vorticity gradients in the core of the jets act as a strong barrier to tracer transport these observations have important implications for the transport of pollutants in oceans and the atmosphere. The behavior of westward jets is found to be markedly different from that of eastward jets. Keywords Jupiter planet Great red spot Jet flow Persistent vortices Axisymmetric convection.

Descriptors:

• *TURBULENCE
• *JET FLOW
• LABORATORY TESTS
• PARAMETERS
• RED(COLOR)
• NUMERICAL ANALYSIS
• CONVECTION
• VORTICES
• TRANSPORT PROPERTIES
• CYLINDRICAL BODIES
• SCALE
• SYMMETRY
• AXISYMMETRIC
• FLUIDS
• POLLUTANTS
• FLOW
• OCEANS
• RANGE(EXTREMES)
• AZIMUTH
• ROTATION
• TRAVELING WAVES
• GRADIENTS
• DIRECTIONAL
• PLANETS
• COUETTE FLOW
• STANDING WAVES
• ROSSBY WAVES
• JUPITER(PLANET)
• MATHEMATICAL MODELS
• CONTROL

Subject Categories:

• Astrophysics
• Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE