PSU Mark
Eberly College of Science Mathematics Department

Meeting Details

For more information about this meeting, contact Andrew Belmonte, Hope Shaffer.

Title:Hydrodynamic Instabilities around Simple A+B->C Chemical Fronts
Seminar:The Pritchard Lab Seminar
Speaker:Anne De Wit, Center for Nonlinear Phenomena, Université Libre de Bruxelles - Belgium
Abstract:
Density or viscosity changes across a simple A+B->C chemical front can lead to hydrodynamic flows that deform the concentration fields in space and time. In the first part of the talk, I will review the buoyancy-driven flows that can be observed around such a front when the chemical reaction triggers density changes in a covered horizontal solution layer. I will show theoretically for this case that the dynamics in the presence of convection can be predicted solely on the basis of the 1D reaction-diffusion density profile across the front. In the second part of the talk, I will discuss chemically-driven viscous fingering instabilities of A+B->C fronts occuring when a solution of reactant A displaces a solution of another reactant B of same viscosity, producing a more viscous product C at the interface.

Room Reservation Information

Room Number:MB106
Date:11 / 19 / 2008
Time:02:30pm - 03:25pm