Abstract for "Derivation of simplified effective equations for the 
large scale front propagation of turbulent reaction diffusion 
equations": 

I will discuss the derivation of simplified effective equations for the 
large scale front propagation of turbulentreaction diffusion equations 
in the simplest prototypical situations involving advection by turbulent 
velocity fields with two separated scales.

The talk is based on the papers

  "Large scale front dynamics for turbulent reaction-diffusion
   equations with separated velocity scales"

by Andrew J. Majda and Panagiotis E. Souganidis, and

  "Comparison of turbulent flame speeds from complete averaging
   and the G-equation"

by Pedro F. Embid, Andrew J. Majda and Panagiotis E. Souganidis.