We study oscillatory and chaotic reaction fronts described by the Kuramoto-Sivashinsky equation coupled to different types of fluid motion. We first apply a Poiseuille flow on the fronts inside a two-dimensional slab. We show regions of period doubling transition to chaos for different values of the average speed of Poiseuille flow. We also analyze the effects of a convective flow due to a Rayleigh-Taylor instability. Here the front is a thin interface separating two fluids of different densities inside a two-dimensional vertical slab. Convection is caused by buoyancy forces across the front as the lighter fluid is under a heavier fluid. We first obtain oscillatory and chaotic solutions arising from instabilities intrinsic to the front. Then, we determine the changes on the solutions due to fluid motion.
Autor(es):
Vilela Proaño, Pablo Martín
Vásquez, Desiderio A.
Año: 2016
Título de la revista: Eur. Phys. J. Special Topics
Ciudad: Heidelberg
Volumen: 225
Número: 13-14
Página inicial - Página final: 2563-2572
ISSN: 1951-6355
Url: https://link.springer.com/article/10.1140%2Fepjst%2Fe2016-60003-5