Focusing of the flow capture for local exhaust ventilation systems

Abstract

Through numerical modeling study the capacity of peripheral vortex shielding to generate the more concentrated exhaust inflow comparing with action of the conventional hood has been elucidated. Obtained data demonstrate evolution of focusing capture flow under variation of key parameters. Agreement between modeling results and observed flows has been revealed. The potential benefits of application of the vortex suction technique for local ventilation systems have been considered.