title: Density fingering in spatially modulated Hele-Shaw cells.
abstract: Density fingering of the chlorite-tetrathionate reaction has been studied experimentally in a periodically heterogeneous Hele-Shaw cell where the heterogeneity is introduced in the form of spatial modulation of gap width along the front. Depending on the spatial wavelength, gap width, and chemical composition, three types of cellular structures have been observed. The initial evolution is characterized by dispersion curves, while the long time behavior is described by the change in the autocorrelation function of the front profile and in the mixing length of the patterns.
authors.affiliation: Department of Physical Chemistry, University of Szeged, P.O. Box 105, Szeged, H-6701, Hungary.
authors.forename: Tamara
authors.initials: T
authors.lastname: Tóth
authors.forename: Dezso
authors.initials: D
authors.lastname: Horváth
authors.forename: Agota
authors.initials: A
authors.lastname: Tóth