Analysis of electrical potentials in flames

Distribution of electrical potential is investigated for two kinds of flame s: Bunsen burner and counterflow flames. different electrode materials have been tested to determine these potentials. Measurable potentials and organ ized structures are found. Premixed Bunsen burner flames show a zero potent ial cone at their base just under the most intense potential region. One-di mensional counterflow diffusion flames are characterized by the stretch rat e. The potential reaches its minimum value in the reaction zone and its abs olute value decreases when stretch increases. (C) 2001 Academie des science s/Editions scientifiques et medicales Elsevier SAS.