Front dynamics in turbulent media
arXiv:chao-dyn/9708014 · doi:10.1063/1.869485
Abstract
A study of a stable front propagating in a turbulent medium is presented. The front is generated through a reaction-diffusion equation, and the turbulent medium is statistically modeled using a Langevin equation. Numerical simulations indicate the presence of two different dynamical regimes. These regimes appear when the turbulent flow either wrinkles a still rather sharp propagating interfase or broadens it. Specific dependences of the propagating velocities on stirring intensities appropriate to each case are found and fitted when possible according to theoretically predicted laws. Different turbulent spectra are considered.
8 pages, REVTEX, 6 postscript figures included. To appear in Phys. Fluids (1997)