Lehr, HeinerSagués i Mestre, FrancescSancho, José M.2011-07-072011-07-0719971539-3755https://hdl.handle.net/2445/18698We consider diffusion of a passive substance C in a phase-separating nonmiscible binary alloy under turbulent mixing. The substance is assumed to have different diffusion coefficients in the pure phases A and B, leading to a spatially and temporarily dependent diffusion ¿coefficient¿ in the diffusion equation plus convective term. In this paper we consider especially the effects of a turbulent flow field coupled to both the Cahn-Hilliard type evolution equation of the medium and the diffusion equation (both, therefore, supplemented by a convective term). It is shown that the formerly observed prolonged anomalous diffusion [H. Lehr, F. Sagués, and J.M. Sancho, Phys. Rev. E 54, 5028 (1996)] is no longer seen if a flow of sufficient intensity is supplied.7 p.application/pdfeng(c) The American Physical Society, 1997Dinàmica de fluidsEquacions d'estatEquilibri químicRegla de les fases i equilibriFluid dynamicsEquations of stateChemical equilibriumPhase rule and equilibriuminfo:eu-repo/semantics/article118395info:eu-repo/semantics/openAccess