Title :
Secondary Flow Oscillation in Outer Region of Unobstructed Co-rotating Disks in Shroud
Author :
Kong, Dae-Wee ; Joo, Won-Gu
Author_Institution :
Dept. of Mech. Eng., Yonsei Univ., Seoul
fDate :
Nov. 29 2006-Dec. 1 2006
Abstract :
In this study, we have tried LES model for inner-disk flowfield to investigate the flow disturbance and the flow structure driven by the co-rotating disks without any obstruction. The boundary pattern between inner region and outer region obtained lobe-shape structure clearly and its number has been validated on experimental data by our previous study. Two kinds of disturbances in the outer region were observed, one is global wave propagation and another is local wave propagation on Ekman boundary layer. Those disturbances make together the oscillation of secondary flow near the shroud
Keywords :
boundary layers; disc drives; fluid oscillations; hard discs; wave propagation; Ekman boundary layer; HDD; LES model; inner-disk flowfield; secondary flow oscillation; shroud; unobstructed co-rotating disks; wave propagation; Brain modeling; Fluctuations; Geometry; Grid computing; Hard disks; Mechanical engineering; Mesh generation; Numerical analysis; Region 1; Shape; Co-rotating disks; Flow fluctuation; HDD; LES;
Conference_Titel :
Asia-Pacific Magnetic Recording Conference, 2006
Conference_Location :
Singapore
Print_ISBN :
1-4244-0863-6
DOI :
10.1109/APMRC.2006.365929
