Effect of electro-aero-dynamically induced secondary flow on transport of fine particles in an electrostatic precipitator

The turbulent motion which strongly affects the distribution of charged particles in an electrostatic precipitator is investigated using a laboratory model with barbed ionising electrodes. The flow visualisation reveals a vigorous well organised roll-like secondary flow. A simple 2-D numerical model confirms that a typical velocity of this secondary flow can be of the order of 1 m/s.