Flow coupling mechanisms in two-layer Rayleigh-Benard convection
Rayleigh-Benard convection in two-layer systems is characterized by two distinct modes of flow coupling. These are: thermal coupling and mechanical coupling. Intelligible observations of the temperature field for both coupling mechanisms are provided. The flow coupling mechanisms are experimentally...
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| Published in | Experiments in fluids Vol. 23; no. 3; pp. 252 - 261 |
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| Main Authors | , , , , |
| Format | Journal Article |
| Language | English |
| Published |
Heidelberg
Springer
28.07.1997
Berlin |
| Subjects | |
| Online Access | Get full text |
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| Abstract | Rayleigh-Benard convection in two-layer systems is characterized by two distinct modes of flow coupling. These are: thermal coupling and mechanical coupling. Intelligible observations of the temperature field for both coupling mechanisms are provided. The flow coupling mechanisms are experimentally characterized as a function of the contrast in the buoyancy driving forces and in the viscosities of the two layers. Aside from the flow coupling between the layers, flow patterns in each layer, and their corresponding spatial transitions are found to be similar to those reported for single layer convection in rectangular boxes. (Author) |
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| AbstractList | Rayleigh-Benard convection in two-layer systems is characterized by two distinct modes of flow coupling. These are: thermal coupling and mechanical coupling. Intelligible observations of the temperature field for both coupling mechanisms are provided. The flow coupling mechanisms are experimentally characterized as a function of the contrast in the buoyancy driving forces and in the viscosities of the two layers. Aside from the flow coupling between the layers, flow patterns in each layer, and their corresponding spatial transitions are found to be similar to those reported for single layer convection in rectangular boxes. (Author) |
| Author | YASUDA, K KUWAHARA, K OTSUBO, F DOI, T PRAKASH, A |
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| Keywords | Rayleigh-Benard instability Convective instabilities Test facilities Cellular convection Two layer medium Unsteady flow Experimental study Immiscible fluid Viscous fluids Heat transfer |
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| SubjectTerms | Buoyancy-driven instability Exact sciences and technology Fluid dynamics Fundamental areas of phenomenology (including applications) Hydrodynamic stability Instrumentation for fluid dynamics Physics |
| Title | Flow coupling mechanisms in two-layer Rayleigh-Benard convection |
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