Density fingering in spatially modulated Hele-Shaw cells

Journal Article · Fri Dec 21 00:00:00 EST 2007 · Journal of Chemical Physics

DOI:https://doi.org/10.1063/1.2804426· OSTI ID:21024624

Toth, Tamara; Horvath, Dezso; Toth, Agota ^[1]

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1. Department of Physical Chemistry, University of Szeged, P.O. Box 105, Szeged, H-6701 (Hungary)

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.

• OSTI ID: 21024624
• Journal Information: Journal of Chemical Physics, Vol. 127, Issue 23; Other Information: DOI: 10.1063/1.2804426; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-9606
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
ANIONS
CHEMICAL COMPOSITION
CHLORINE COMPOUNDS
ION-MOLECULE COLLISIONS
OXYGEN COMPOUNDS
THIONATES
WAVELENGTHS