슬림타입 외장형 ODD 내부의 유동 안정을 통한 소음저감에 관한 연구
분야
공학 > 전자공학
저자
이우진 ( Woo Jin Lee ) , 서준호 ( Jun Ho Seo ) , 임윤철 ( Yoon Chul Rhim )
발행기관
정보저장시스템학회
간행물정보
정보저장시스템학회논문집 2012년, 제8권 제2호, 72~77페이지(총6페이지)
파일형식
2i100174.pdf [무료 PDF 뷰어 다운로드]
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    영문초록
    The demand for the laptop computer has been increased day by day and most of users ask quiet computer and devices to work in comfortable environment. One of the devices which generate acoustic noise is an external ODD. Unlike the internal ODD, the external ODD is easy to emit noise because it runs outside of the computer and also it is packed with a thin plastic covers. As the disk rotates, vortex flow is generated inside of the cavity due to various and complicated mold parts of the cover. In addition, there is a gap between the disk tray and the upper/lower cases, through which the air flows as well as the noise leaks. In this study, we have proposed how to reduce the acoustic noise of an external ODD using numerical and experimental analysis. The pressure fluctuations and turbulent kinetic energy distributions are calculated for the developed model. The results show that the sound pressure level is reduced by 2.3dB through simple modifications of ribs of the top cover, which remove or suppress flow instabilities inside of the cavity.
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