An experimental investigation of a roof-mounted horizontal-axis wind turbine in an idealized urban environment

Wind-tunnel experiments are performed to investigate the effect of minor modifications roof edge shape on power performance and wake characteristics a horizontal-axis wind turbine sited cube-shaped building. Three shapes considered: sharp edge, rounded solid fence. The is dependent its streamwise position, due difference in flow shear induced by different edges. fence cases show high variation with which reduced significantly rounded-edge case. shows worst regardless position also found affect wake. Specifically, recovery expansion rates be greatest for case, they decrease increasing smoothness This related base turbulence shapes. Compared flow, intensity building, except at rotor top tip level.