HYDROCARBON DIFFUSION FLAME: EFFECT OF AN ELECTRIC FIELD ON STABILIZATION
A.V. Tupikin, V.V. Lukashov
Kutateladze Institute of Thermophysics, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
Keywords: diffusion flame, lift-off height, homochronicity criterion, electric field, hydrocarbon fuel
Abstract
The stabilization of a diffusion flame of gaseous hydrocarbons and hydrogen-containing mixtures is studied both for free discharge into the atmosphere and under the action of an external electric field. Current-voltage characteristics of the flame in an electric field are obtained for various hydrogen volume fractions. A change in the stabilization regime is observed when a constant electric field is applied. The relationship between the flame lift-off height and the homochronicity criterion is examined. The electrohydrodynamic effect on the flame is found to be dual in nature: in addition to the ionic wind, there is another mechanism by which the electric field influences the flame, associated with the induction of a space charge in the reaction region by the external field.
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