Abstract
Digitally processed shadowgraph images revealed time-dependent flow patterns slightly above the convective onset in a cylindrical cell of aspect ratio $L\ensuremath{\equiv}\frac{D}{2d}=15.0$ ($D$ is diameter, $d$ is height). This time dependence was monitored for up to 200 horizontal thermal diffusion times. At larger Rayleigh numbers, the system reached time-dependent states after much shorter transients.
Keywords
ShadowgraphConvectionThermalContainer (type theory)MechanicsConvective flowDiffusionMaterials scienceFlow (mathematics)Rayleigh numberRayleigh scatteringPhysicsOpticsThermodynamicsNatural convectionComposite material
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Publication Info
- Year
- 1985
- Type
- article
- Volume
- 54
- Issue
- 13
- Pages
- 1373-1376
- Citations
- 114
- Access
- Closed
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Cite This
Guenter Ahlers,
David S. Cannell,
Victor Steinberg
(1985).
Time Dependence of Flow Patterns near the Convective Threshold in a Cylindrical Container.
Physical Review Letters
, 54
(13)
, 1373-1376.
https://doi.org/10.1103/physrevlett.54.1373
Identifiers
- DOI
- 10.1103/physrevlett.54.1373
- PMID
- 10031015