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How can I fix my laptop fan noise? 

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Proceedings ArticleDOI
R.H. Lyon, A.E. Bergles 
09 Mar 2004
9 Citations
If fan noise were eliminated, this part of the noise must remain.
The results show that under the abnormal condition, fan performance is lower than normal value and the noise rises.
The data presented indicates that this turbulence is the dominant source of noise above 1.5 kHz for the fan tested.
Therefore, the noise observeda way from a low pressure axial flow fan is mostly the turbulent noise.
Proceedings ArticleDOI
R.H. Lyon, A.E. Bergles 
09 Mar 2004
9 Citations
This noise may have both tonal and random components and is strongly dependent on the way that the fan is placed in the unit and on how close its operation is to the design operating point.
Proceedings ArticleDOI
Antoine Moreau, Sebastien Guerin 
07 Jun 2010
15 Citations
Furthermore the acoustic output at the presence of parameter variations provides guidelines for the design-to-noise of fan components.
The results show that the noise emission of the Panaflo fan is directly related to the voltage and inversely related to the air-flow rate.
In addition, new sources caused by the interaction between the stationary distortion and the fan blades appear and contribute to the inlet noise.
The results of this study have an important bearing on estimating the noise characteristics of new fan designs from scaling the measured characteristics of previously tested fans.
A comparative study shows that the potential acoustic shielding effect is less favourable to the jet noise than to the downstream fan noise.