Hydrodynamic instabilities and Soret effect in an aqueous electrolyte
| Autor: | J. Dupuy-Philon, J. Bert, Jean Colombani, H. Dez |
|---|---|
| Přispěvatelé: | Département de Physique des Matériaux (DPM), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 1998 |
| Předmět: |
Convection
Materials science Thermodynamics Aqueous electrolyte Thermal diffusivity 01 natural sciences Thermophoresis 010305 fluids & plasmas [SPI.MAT]Engineering Sciences [physics]/Materials Physics::Fluid Dynamics [SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry 0103 physical sciences [PHYS.COND.CM-SM]Physics [physics]/Condensed Matter [cond-mat]/Statistical Mechanics [cond-mat.stat-mech] 010306 general physics Concentration gradient ComputingMilieux_MISCELLANEOUS |
| Zdroj: | Physical Review E Physical Review E, American Physical Society (APS), 1998, 58 (3), pp.3202-3208. ⟨10.1103/PhysRevE.58.3202⟩ |
| ISSN: | 1063-651X 2470-0045 2470-0053 |
| DOI: | 10.1103/PhysRevE.58.3202⟩ |
| Popis: | In order to gain reliable thermal diffusion measurements, which enable a microscopic interpretation of this effect, we have studied the hydrodynamical stability of a confined ~LiCl, 9.7H2O) mixture submitted to both temperature and concentration gradients. A comparison with Rayleigh-Benard experiments in binary mixtures has been undertaken that emphasizes the influence of the confinement. This study has permitted one to carry out interdiffusion and Soret coefficient measurements of the liquid, free from any convective disturbance. Opposite to initial predictions, the Soret coefficient appears to be largely negative and these results weaken some assumptions about the origin of the sign inversion of the effect, which is still questionable. @S1063-651X~98!09209-5# |
| Databáze: | OpenAIRE |
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