CAA of an Air-Cooling System for Electronic Devices

Figure 25

Normalized discrete Fourier transform of the aeroacoustic sources computed according to the right-hand side of (4) (a) and sound pressure field computed by the CAA method based on URANS data at 837 Hz on plane perpendicular to the fan axes (b) and on a vertical midplane through the device (c) (blue: 0; red: 1).

(a) Acoustic sources

(b) Sound pressure

(c) Sound pressure