“…In an electrostatic precipitator, which is an air cleaning device, charge that is created by ionization attaches to polluting particles which subsequently are guided towards the collecting plates [4e6, 8,11,12,14,19]. Furthermore, for the considered geometry, Alstom Power in V€ axj€ o, Sweden has performed measurements of the current density at the collector plates [4,5], which are used to validate the domain decomposition method.…”