Concentration field in traveling-wave and stationary convection in fluid mixtures

Journal Article · Sat Jun 15 04:00:00 EDT 1991 · Physical Review, A; (USA)

DOI:https://doi.org/10.1103/PhysRevA.43.7105· OSTI ID:5466831

Eaton, K D; Ohlsen, D R; Yamamoto, S Y; Surko, C M ^[1]; Barten, W; Luecke, M ^[2]; Kamps, M ^[3]; Kolodner, P ^[4]

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1. Department of Physics and Institute for Nonlinear Science, University of California at San Diego, La Jolla, California 92093 (USA)
2. Institut fuer Theoretische Physik, Universitaet des Saarlandes, D-6600 Saarbruecken, Federal Republic of Germany (DE)
3. Stabstelle Supercomputing, Forschungszentrum Juelich, D-5170 Juelich, Federal Republic of Germany (DE)
4. AT T Bell Laboratories, Murray Hill, New Jersey 07974 (USA)

By comparison of measurements of shadowgraph images of convection in ethanol-water mixtures with the results of recent numerical calculations, we study the role of the concentration field in traveling-wave and stationary convection. The results confirm the existence of a large concentration contrast between adjacent traveling-wave convection rolls. This concentration modulation, which decreases as the Rayleigh number is increased and the transition to stationary convection is approached, is fundamental to the translation of the pattern.

• DOE Contract Number: FG03-90ER14148
• OSTI ID: 5466831
• Journal Information: Physical Review, A; (USA), Journal Name: Physical Review, A; (USA) Vol. 43:12; ISSN 1050-2947; ISSN PLRAA
• Country of Publication: United States
• Language: English

Related Subjects

640410* -- Fluid Physics-- General Fluid Dynamics
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALCOHOLS
BINARY MIXTURES
CONVECTION
CORRELATIONS
DISPERSIONS
ENERGY TRANSFER
ETHANOL
FLOW VISUALIZATION
FLUIDS
HEAT TRANSFER
HYDROGEN COMPOUNDS
HYDROXY COMPOUNDS
MASS TRANSFER
MIXTURES
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
QUANTITY RATIO
STANDING WAVES
TRAVELLING WAVES
WATER