One of the main noise sources in computers are the cooling fans. An important aspect of the noise they generate is tonal noise produced at the rotational frequency of the fan, the blade passing frequency (BPF), and its higher harmonics. Previous research pointed out that so-called side resonators can be applied successfully to reduce this tonal noise. A variety of side resonator geometries is available. A model describing viscothermal wave propagation in a circular side-resonator and the connected duct and the preliminary results of a parameter study of that model where presented previously. The experimental verification of the model is presented here.
|Publication status||Published - 2004|
|Event||2004 International Conference on Noise and Vibration Engineering, ISMA 2004 - Leuven, Belgium|
Duration: 20 Sep 2004 → 22 Sep 2004
|Conference||2004 International Conference on Noise and Vibration Engineering, ISMA 2004|
|Period||20/09/04 → 22/09/04|
Nijhof, M. J. J., Wijnant, Y. H., de Boer, A., & Beltman, W. M. (2004). Reduction of fan noise bymeans of (circular) side-resonators; theory and experiment. 403-416. Paper presented at 2004 International Conference on Noise and Vibration Engineering, ISMA 2004, Leuven, Belgium.