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Effects of functional end-group on nano-tribology characteristics of ultra-thin liquid lubricant films in hard disk drives 功能端基对硬盘驱动器超薄液体润滑膜纳米摩擦学特性的影响
APMRC 2004 Asia-Pacific Magnetic Recording Conference, 2004. Pub Date : 1900-01-01 DOI: 10.1109/apmrc.2004.1521929
N. Tagawa, A. Mori
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引用次数: 0
Aerodynamic effects of disk size and enclosure gap on power consumption in HDD 磁盘尺寸和外壳间隙对HDD功耗的气动影响
APMRC 2004 Asia-Pacific Magnetic Recording Conference, 2004. Pub Date : 1900-01-01 DOI: 10.1109/APMRC.2004.1521963
Seung-Yop Lee, Sung-Oug Cho, Y. Rhim
{"title":"Aerodynamic effects of disk size and enclosure gap on power consumption in HDD","authors":"Seung-Yop Lee, Sung-Oug Cho, Y. Rhim","doi":"10.1109/APMRC.2004.1521963","DOIUrl":"https://doi.org/10.1109/APMRC.2004.1521963","url":null,"abstract":"In this paper, the aerodynamically dissipated power loss in hard disk drives is studied. The effects of rotational speed and form factor on the dissipation power loss are analyzed and compared to experimental results using 3.5\", 2.5\" and 1\" disks. The torque coefficients for laminar and turbulent models are derived for various enclosure conditions. We implement experiments using a vacuum chamber and calculate frictional power loss by disk rotation. For a 1-inch disk, the power dissipation agrees well with the laminar model, which is inversely proportional to the half power of Reynolds number. The frictional power consumption by 3.5-inch disk is similar to the air turbulent model. Finally, we propose the drive enclosure geometry to minimize the aerodynamic power loss based on the experimental results.","PeriodicalId":445247,"journal":{"name":"APMRC 2004 Asia-Pacific Magnetic Recording Conference, 2004.","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121734301","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
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