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Experimental Study of Buoyancy-Driven Instabilities Around Acid-Base Reaction Fronts

  • L. Lemaigre
  • L. A. Riolfo
  • A. De Wit
Part of the Springer Proceedings in Complexity book series (SPCOM)

Abstract

The interplay between hydrodynamics and chemistry can give rise to complex non linear dynamics. To study how a simple A+B→C reaction can affect buoyancy-driven instabilities, we experimentally investigate convective flows appearing at the miscible interface between a solution of a reactant A put on top of a solution of another reactant B in the gravity field when a reaction takes place. The main observation is that the symmetry of the hydrodynamic patterns is drastically modified by the chemistry.

Keywords

Gravity Field Contact Line Induction Time Hydrodynamic Instability Molecular Diffusion Coefficient 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgements

We acknowledge Prodex, the ITN—Marie Curie—Multiflow network and FRS-FNRS for financial support.

References

  1. 1.
    De Wit A (2008) Chemo-hydrodynamic patterns and instabilities. Chim Nouv 99:1–7 Google Scholar
  2. 2.
    Trevelyan PMJ, Almarcha C, De Wit A (2011) Buoyancy-driven instabilities of miscible two-layer stratifications in porous media and Hele-Shaw cells. J Fluid Mech 670:38–65 MathSciNetADSzbMATHCrossRefGoogle Scholar
  3. 3.
    Turner JS (1979) Buoyancy effects in fluids. Cambridge University Press, Cambridge zbMATHGoogle Scholar
  4. 4.
    Cooper CA, Glass RJ, Tyler SW (1997) Experimental investigation of the stability boundary for double-diffusive finger convection in a Hele-Shaw cell. Water Resour Res 33:517–526 ADSCrossRefGoogle Scholar
  5. 5.
    Pringle SE, Glass RJ (2002) Double-diffusive finger convection: influence of concentration at fixed buoyancy ratio. J Fluid Mech 462:161–183 MathSciNetADSzbMATHCrossRefGoogle Scholar
  6. 6.
    Shi Y, Eckert K (2006) Acceleration of reaction fronts by hydrodynamic instabilities in immiscible systems. Chem Eng Sci 61:5523–5533 CrossRefGoogle Scholar
  7. 7.
    Settles GS (2001) Schlieren and shadowgraph techniques. Springer, Berlin zbMATHCrossRefGoogle Scholar
  8. 8.
    Almarcha C, Trevelyan PMJ, Riolfo LA, Zalts A, El Hasi C, D’Onofrio A, De Wit A (2010) Active role of a color indicator in buoyancy-driven instabilities of chemical fronts. J Phys Chem Lett 1:752–757 CrossRefGoogle Scholar
  9. 9.
    Kuster S, Riolfo LA, Zalts A, El Hasi C, Almarcha C, Trevelyan PMJ, De Wit A, D’Onofrio A (2011) Differential diffusion effects on buoyancy-driven instabilities of acid-base fronts: the case of a color indicator. Phys Chem Chem Phys 13:17295–17303 CrossRefGoogle Scholar
  10. 10.
    Zalts A, El Hasi C, Rubio D, Ureña A, D’Onofrio A (2008) Pattern formation driven by an acid-base neutralization reaction in aqueous media in a gravitational field. Phys Rev E 77:015304 ADSCrossRefGoogle Scholar
  11. 11.
    Almarcha C, Trevelyan PMJ, Grosfils P, De Wit A (2010) Chemically driven hydrodynamic instabilities. Phys Rev Lett 104:044501 ADSCrossRefGoogle Scholar
  12. 12.
    Almarcha C, R’Honi Y, De Decker Y, Trevelyan PMJ, Eckert K, De Wit A (2011) Convective mixing induced by acid-base reactions. J Phys Chem B 115:9739–9744 CrossRefGoogle Scholar

Copyright information

© Springer International Publishing Switzerland 2013

Authors and Affiliations

  • L. Lemaigre
    • 1
  • L. A. Riolfo
    • 1
  • A. De Wit
    • 1
  1. 1.Nonlinear Physical Chemistry Unit, Service de Chimie Physique et Biologie Théorique, Faculté des SciencesUniversité Libre de Bruxelles (ULB)BrusselsBelgium

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