Impact of an Electric Field on the Buyoancy Instability of an Autocatalytic Reaction Front in a Narrow Cell

Kód výsledku v IS VaVaI

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Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Impact of an Electric Field on the Buyoancy Instability of an Autocatalytic Reaction Front in a Narrow Cell

Popis výsledku v původním jazyce

The paper presents results of experimental studies of action of the electric field on the velocity and stability of the traveling fronts. The studies were performed in a quasi 2-dimensional (Hele-Shaw) cell made of two glass plates separated by a teflonspacer. One of the glass plates was coated with conductive 25 nm indium-thin-oxide (ITO) layer. The electrodes (5 mm wide strips) were made in this coating by etching. In our experiments the reaction begins on the cathode, where a pair of an ascending and descending fronts is formed. Due to the density gradient arising across the reaction fronts as a result of composition changes, the ascending front becomes unstable a forms so called "fingers". An electric field applied across the Hele-Shaw cell will be shown to stabilize ascending fronts when the positive electrode is placed above the front.

Název v anglickém jazyce

Impact of an Electric Field on the Buyoancy Instability of an Autocatalytic Reaction Front in a Narrow Cell

Popis výsledku anglicky

The paper presents results of experimental studies of action of the electric field on the velocity and stability of the traveling fronts. The studies were performed in a quasi 2-dimensional (Hele-Shaw) cell made of two glass plates separated by a teflonspacer. One of the glass plates was coated with conductive 25 nm indium-thin-oxide (ITO) layer. The electrodes (5 mm wide strips) were made in this coating by etching. In our experiments the reaction begins on the cathode, where a pair of an ascending and descending fronts is formed. Due to the density gradient arising across the reaction fronts as a result of composition changes, the ascending front becomes unstable a forms so called "fingers". An electric field applied across the Hele-Shaw cell will be shown to stabilize ascending fronts when the positive electrode is placed above the front.

Druh

D - Stať ve sborníku

CEP obor

CI - Průmyslová chemie a chemické inženýrství

OECD FORD obor

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Projekt

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Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2003

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Proceedings of the 30th International Conference of Slovak Society of Chemical Engineering, Tatranské Matliare 26.- 30.5.2003, CD-ROM

ISBN

80-227-1889-0

ISSN

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e-ISSN

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Počet stran výsledku

10

Strana od-do

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Název nakladatele

Slovak University of Technology

Místo vydání

Bratislava

Místo konání akce

Tatranské Matliare, Slovakia

Datum konání akce

26. 5. 2003

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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