Fig. 4From: Numerical Study of Aeroacoustic Sound on Performance of Bladeless Fan(a) Schematic of airflow outlet area for three hydraulic diameters of 30 cm, 60 cm and 120 cm; (b) Studied airfoil for aspect ratio studying cases; (c) Square outlet of fan with constant hydraulic diameter of 30 cm and outlet slit of 1.3 mm; (d) Circular outlet of fan with constant hydraulic diameter of 30 cm and outlet slit of 1.3 mmBack to article page