Can an adverse density difference across a surface be stabilized by heating from above?
| Autor: | L. E. Johns, Ranga Narayanan |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
Surface (mathematics)
Convection Chemistry Thermodynamics Stability (probability) Thermal expansion Surfaces Coatings and Films Electronic Optical and Magnetic Materials Biomaterials Temperature gradient Colloid and Surface Chemistry Thermal conductivity Thermal Computer Science::Databases Order of magnitude |
| Zdroj: | Journal of Colloid and Interface Science. 449:327-331 |
| ISSN: | 0021-9797 |
| Popis: | We investigate the possibility of stabilizing a Rayleigh–Taylor experiment by imposing a small upward temperature gradient. We find that if the two fluids have equal thermal conductivities nothing can be accomplished. If either thermal conductivity is much greater than the other, the small gradient is always stabilizing. If the thermal conductivities are of the same order of magnitude the small gradient can be stabilizing or destabilizing depending on the thermal expansion coefficients. We have used a Darcy model so that we can derive formulas and present a physical explanation of what we find. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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