Pérez Muñuzuri, VicenteSagués i Mestre, FrancescSancho, José M.2011-07-072011-07-0720001539-3755https://hdl.handle.net/2445/18775The dynamics of three-dimensional scroll rings with spatiotemporal random excitability is investigated numerically using the FitzHugh-Nagumo model. Depending on the correlation time and length scales of the fluctuations, the lifetime of the ring filament is enlarged and a resonance effect between the time scale of the scroll ring and the time correlation of the noise is observed. Numerical results are interpreted in terms of a simplified stochastic model derived from the kinematical equations for three-dimensional excitable waves.6 p.application/pdfeng(c) American Physical Society, 2000Dinàmica de fluidsQuímica físicaFluid dynamicsPhysical chemistryinfo:eu-repo/semantics/article170365info:eu-repo/semantics/openAccess