CAA of an Air-Cooling System for Electronic Devices

Figure 27

Normalized discrete Fourier transform of the aeroacoustic sources computed according to the right-hand side of (4) and sound pressure field computed by the CAA method based on URANS data at 666 Hz on plane through both fan axes (blue: 0; red: 1).

(a) Acoustic sources

(b) Sound pressure

(c) Sound pressure normalized to max/4 with logarithmic scale