Mean flows and the onset of chaos in large-cell convection

Journal Article · Mon May 30 00:00:00 EDT 1988 · Phys. Rev. Lett.; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.60.2269· OSTI ID:5249299

Greenside, H S; Cross, M C; Coughran, Jr, W M

Numerical simulations of two-dimensional model equations show that a coupling between amplitude and vertical-vorticity fields allows chaotic flows near the onset of Rayleigh-Benard convection in large aspect ratio domains. In cylindrical cells, mean flows arising from this coupling lead to a chaotic nucleation of dislocations that is remarkably similar to recent observations in convection experiments.

• Research Organization: Department of Computer Science and Department of Physics, Duke University, Durham, North Carolina 27706
• OSTI ID: 5249299
• Journal Information: Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 60:22; ISSN PRLTA
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420400* -- Engineering-- Heat Transfer & Fluid Flow
AMPLITUDES
CONVECTION
COUPLING
CYLINDERS
ENERGY TRANSFER
HEAT TRANSFER
INSTABILITY
MASS TRANSFER
MATHEMATICS
NUMERICAL ANALYSIS
SIMULATION
STOCHASTIC PROCESSES
TWO-DIMENSIONAL CALCULATIONS
VORTICES