VISCOTHERMAL WAVE PROPAGATION INCLUDING ACOUSTO-ELASTIC INTERACTION, PART II: APPLICATIONS

Autor: BELTMAN, W.M.

Publikováno v: In Journal of Sound and Vibration 28 October 1999 227(3):587-609

Acoustic modeling of fan noise generation and scattering in a modular duct system

Autor: Nijhof, M.J.J., Beltman, W.M., Wijnant, Ysbrand H., de Boer, Andries

Publikováno v: ISSUE=12;TITLE=12th International Congress on Sound and Vibration, ICSV 2005

Fan noise is an important noise source in computers. The noise spectrum of fans contains tonal noise, found at the so-called Blade Passing Frequency (BPF) and its higher harmonics, that plays an important role in the perceived sound quality. An acous

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=narcis______::7e65cbbd9d462337b9108ae98a476e91
https://research.utwente.nl/en/publications/41751ec8-b2f2-45ad-aaeb-728bd4710dcf

Optimizing Circular Side-Resonators to Reduce Computer Fan Noise

Autor: Nijhof, M.J.J., Beltman, W.M.

Publikováno v: STARTPAGE=815;ENDPAGE=826;TITLE=None

One of the main noise sources in computers are the cooling fans. Tonal noise at the rotational frequency of the fan, the blade passing frequency (BPF) and its higher harmonics are important in fan noise. So called 'side-resonators' integrated in the

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=narcis______::a721d3cfc0fd58871889c42d99dc124c
https://research.utwente.nl/en/publications/optimizing-circular-sideresonators-to-reduce-computer-fan-noise(b15601f8-d07c-4846-97aa-3f19a018c2d1).html

Reduction of fan noise bymeans of (circular) side-resonators; theory and experiment

Autor: Nijhof, M.J.J., Wijnant, Ysbrand H., de Boer, Andries, Beltman, W.M.

Publikováno v: STARTPAGE=403;ENDPAGE=416;TITLE=2004 International Conference on Noise and Vibration Engineering, ISMA 2004

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 rese

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=narcis______::8be3b1ba3b0150909d1f58c765e86533
https://research.utwente.nl/en/publications/reduction-of-fan-noise-bymeans-of-circular-sideresonators-theory-and-experiment(db03efbb-475e-4aef-a984-fd855805de15).html

Viscothermal damping in this gas or fluid layers

Autor: Basten, T.G.H., Beltman, W.M., Tijdeman, H.

Publikováno v: Proceedings of the Second Engineering Mechanics Symposium, 18-18
STARTPAGE=18;ENDPAGE=18;TITLE=Proceedings of the Second Engineering Mechanics Symposium

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=narcis______::5d6762a8368c981d3c8acd4b598a0eea
https://research.utwente.nl/en/publications/viscothermal-damping-in-this-gas-or-fluid-layers(4d6a7418-bfa8-48be-ba21-055e216af6f2).html