著者

窪寺 裕之 津田 直純 立脇 正敬 野田 茂穂 橋口 真宜 丸山 次人

出版者

一般社団法人日本機械学会

雑誌

年次大会講演論文集 : JSME annual meeting

巻号頁・発行日

no.1, pp.235-236, 2001-08-22

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With the increase in recording density and higher rotation speeds, the aerodynamic aspect of HDD (Hard Disk Drives) is now quite significant. We studied the internal air flow of a HDD by using a direct neumerical simulation. We simulated two cases. The first case has the arm with no weight saving hole (no-hole case). The second case has the arm with weight saving hole (hole case). We observed periodic vortices (Karman's vortex) of which frequency is about 6kHz in the downstream of the arm in both cases. The scale of vortex in hole case is lager than that in no-hole case.