Combined action of anticonvective and thermocapillary mechanisms of instability in multilayer systems
โ Scribed by Ilya B. Simanovskii
- Book ID
- 104373143
- Publisher
- Elsevier Science
- Year
- 2000
- Tongue
- English
- Weight
- 355 KB
- Volume
- 19
- Category
- Article
- ISSN
- 0997-7546
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โฆ Synopsis
The nonlinear regimes of convection in the system of three immiscible viscous fluids heated from above are investigated. The interfaces are assumed to be flat. The boundary value problem is solved by the finite-difference method. Transitions between convective motions with different spatial structures are investigated. The common diagram of instability regimes is constructed. The new phenomena caused by direct and indirect interaction of anticonvective and thermocapillary mechanisms of instability are considered. Specifically, different oscillatory configurations where anticonvection arises mainly near the upper interface and thermocapillary convection appears mainly near the lower interface have been found.
๐ SIMILAR VOLUMES
Convective instabilities of the three fluid layer system in a closed cavity are investigated. Two variants of heating -from above and from below -are considered. For the case of heating from above, the so-called anticonvective instability is obtained. For heating from below an oscillatory thermograv