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Showing 1 to 4 of 4 for “"fan noise control"”.
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Compact Integrated Active-Passive Approach for Axial Fan Noise Control
A new active-passive approach for the control of noise radiated from a small axial fan was investigated. The approach involved the installation of an axial fan into a short duct with both passive and active noise control functions. First, a systematic methodology for the analytical modeling of …
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Advanced Trailing Edge Blowing Concepts for Fan Noise Control: Experimental Validation
… performed to reduce rotor / stator interaction noise in turbofan engines. The existing technique of filling every velocity deficit requires a large amount of air and is therefore impractical. The purpose of this research is to investigate new blowing configurations in order to achieve noise …
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Application of microperforated elements in axial fan noise control and silencer design
… this study, microperforated panels were used in fan noise control and in acoustic silencers, where both of the devices are easily accessible by humans.
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Error Sensor Placement for Active Control of an Axial Cooling Fan
Recent experimental achievements in active noise control (ANC) for cooling fans have used near-field error sensors whose locations are determined according to a theoretical condition of minimized sound power. A theoretical point source model, based on the condition previously stated, reveals the …