Eckhaus-Benjamin-Feir Instability in Rotating Convection

Journal Article · Sun Jun 01 00:00:00 EDT 1997 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.78.4391· OSTI ID:548840

Liu, Y; Ecke, R E ^[1]

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1. Condensed Matter Thermal Physics Group and Center for Nonlinear Studies, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)

We report experimental measurements of a traveling-wave state in rotating Rayleigh-B{acute e}nard convection. The fluid was water with a Prandtl number of 6.3 and a dimensionless rotation rate of 274. The marginal and Eckhaus-Benjamin-Feir stability boundaries were determined and the local amplitude and wave number were obtained from demodulation of shadowgraph images. The phase-diffusion coefficient and group velocity were measured in the stable wave number band. This system was found to be well described by the one-dimensional complex Ginzburg-Landau equation. {copyright} {ital 1997} {ital The American Physical Society}

• OSTI ID: 548840
• Journal Information: Physical Review Letters, Vol. 78, Issue 23; Other Information: PBD: Jun 1997
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
CONVECTION
TRAVELLING WAVES
ROTATION
GINZBURG-LANDAU THEORY
INSTABILITY
RAYLEIGH-TAYLOR INSTABILITY
DIFFUSION
BOUNDARY CONDITIONS