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A+BC Reaction Fronts in Hele-Shaw Cells Under Modulated Gravitational Acceleration

  • Laurence Rongy
  • Kerstin Eckert
  • Anne De Wit
Part of the Springer Proceedings in Complexity book series (SPCOM)

Abstract

We study the dynamics of A+BC reaction fronts propagating under modulated gravitational acceleration by means of parabolic flight experiments and numerical simulations. We observe an accelerated front propagation under hyper-gravity along with a slowing down of the front under low gravity. By reaction-diffusion-convection simulations of an A+BC front propagating in a thin layer, we can relate this periodic modulation of the front position to the amplification and decay, respectively, of the buoyancy-driven double vortex associated with the front propagation. A correlation between grey-value changes in the experimental shadowgraph images and characteristic changes in the concentration profiles are obtained by a numerical simulation of the imaging process (Eckert et al., Phys. Chem. Chem. Phys., 14:7337–7345, 2012).

Keywords

Rayleigh Number Gravitational Acceleration Reaction Front Normal Gravity Front Position 
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.

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Copyright information

© Springer International Publishing Switzerland 2013

Authors and Affiliations

  • Laurence Rongy
    • 1
  • Kerstin Eckert
    • 2
  • Anne De Wit
    • 1
  1. 1.Nonlinear Physical Chemistry Unit, Service de Chimie Physique et Biologie Théorique, Faculté des SciencesUniversité Libre de Bruxelles (ULB)BrusselsBelgium
  2. 2.Institute of Fluid MechanicsTechnische Universität DresdenDresdenGermany

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