Stability of Natural Convection in Superposed Fluid and Porous Layers Using Integral Transforms
| Autor: | Renato M. Cotta, Benoit Goyeau, S. C. Hirata, Dominique Gobin |
|---|---|
| Rok vydání: | 2006 |
| Předmět: |
Convection
Numerical Analysis Natural convection Materials science Geometry 02 engineering and technology Mechanics Rayleigh number Condensed Matter Physics Thermal diffusivity Integral transform 01 natural sciences 010305 fluids & plasmas Computer Science Applications Physics::Fluid Dynamics Permeability (earth sciences) 020303 mechanical engineering & transports 0203 mechanical engineering Mechanics of Materials Modeling and Simulation 0103 physical sciences Thermal Dimensionless quantity |
| Zdroj: | Numerical Heat Transfer, Part B: Fundamentals. 50:409-424 |
| ISSN: | 1521-0626 1040-7790 |
| DOI: | 10.1080/10407790600682730 |
| Popis: | A stability analysis of thermal natural convection in superposed fluid and porous layers is carried out. The two-layer system is described using a one-domain formulation, and the eigenvalue problem resulting from the stability analysis is solved using the generalized integral transform technique (GITT). The numerical results confirm that the onset of convection can have a bimodal nature depending on the depth ratio. The influence of the dimensionless permeability and thermal diffusivity ratio are investigated. |
| Databáze: | OpenAIRE |
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