A Hybrid CFD/BEM method for the calculation of aeroacoustic noise from a radial fan

Radial fans are used in many important engineering applications. In terms of design, it is desired to increase the efficiency of the fan and to reduce the aeroacoustic noise [1, 2]. In this study, the aerodynamic and acoustic performance of a radial fan used in household laundry dryers is investigated. Preliminary design guidelines of the fan considered were that backward curved blades are used and a logarithmic spiral housing is constructed, in order to increase the efficiency.