공명기를 이용한 고배속 슬림형 드라이브의 유동기인 소음저감에 관한 연구

Reduction of Aerodynamic Noise for a High-Speed Slim-Type Optical Disk Drive by Applying the Principle of Resonator

As the demand for the lap-top computer has been increased, most users ask quiet environment to work comfortably. Therefore, noise problems of an ODD are of great interest. For the high speed ODD, the flow induced noise is caused by the turbulent flow[1], which is known to be a major source of overall noise of a slim type ODD. In this study, we introduce a new attempt to reduce the noise level using the concept of Helmholtz resonator[2].The experimental analysis is carried out for several cases at different resonance frequencies and different hole patterns. The results show reductions in the noise level from the acoustic noise absorption point of view.