Experimental and Theoretical Investigation of Surface Electrization in a Combustion Product Flow

The electrization of cooled and non-cooled surfaces in a combustion product flow loaded with charged soot particles is investigated experimentally and theoretically. The charging currents of the inner surface of a cylinder located in a combustion (propane in air) product flow with a relatively high soot content and the charging currents of cooled and non-cooled cylinders located in a combustion product jet with a relatively low soot content are determined. Physico-mathematical models are constructed for the new effects observed experimentally and these models are theoretically and numerically analyzed.