How do I stop my tower fan from making noise?
Answers from top 20 papers
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| Papers (20) | Insight |
|---|---|
16 Citations | Much of the noise produced by a fan is due to varying forces caused by the unsteady flow field through which it passes. |
101 Citations | A properly contoured, rotating ring-shroud attached to the fan tips was found to be a practical method of controlling tip clearance noise. |
| The results of the analysis and tests show the whine noise is mainly caused by the multiple resonances coincidentally between the excitations of the fan motor’s electromagnetic force and the vibration modes of the fan assembly simultaneously. | |
| However, conventional schemes for unevenly spacing the fan blades, such as modulated blade spacing, do not sufficiently reduce the noise in fans. | |
| Therefore, selective tone removal techniques such as active noise control and/or tuned liner could be particularly effective in reducing noise levels for certain fan speeds. | |
18 Citations | The results indicate the limits of maximum noise reduction which manufacturers may expect using existing fan designs and also indicates the methods for achieving maximum noise reduction for these configurations. |
94 Citations | The predicted effects of the ingested turbulence on the fluctuating blade forces and the fan noise compare favorably with experiments. |
| The noise emission from the household refrigerator is also found to be lessened when the new fan units are installed. | |
05 May 2008 30 Citations | This suggests that fan broadband noise has no simple dependence on the Mach number. |
| The experiments indicate that the rotor–vortex interaction can be a significant source mechanism producing discrete‐tone fan noise. | |
| 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. | |
26 Citations | The results show that under the abnormal condition, fan performance is lower than normal value and the noise rises. |
20 Citations | In this paper, an improved algorithm for active control of fan noise is proposed. |
134 Citations | Vortex shedding can be a significant source of noise when the fan is operated in a lightly loaded condition. |
07 Jun 2010 | Furthermore the acoustic output at the presence of parameter variations provides guidelines for the design-to-noise of fan components. |
| Therefore, the noise observeda way from a low pressure axial flow fan is mostly the turbulent 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. | |
| The method described and applied in this work provides a good qualitative prediction of the noise generation when designing a new fan, thus facilitating the choice of the lowest noise fan from several feasible alternatives. | |
| In addition, new sources caused by the interaction between the stationary distortion and the fan blades appear and contribute to the inlet noise. | |
10 May 2004 18 Citations | A comparative study shows that the potential acoustic shielding effect is less favourable to the jet noise than to the downstream fan noise. |
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