Share This Article:

Numerical Investigation of Flow Structure Interaction Coupling Effects in Hard Disk Drives

Abstract Full-Text HTML Download Download as PDF (Size:1691KB) PP. 9-18
DOI: 10.4236/wjm.2012.21002    4,066 Downloads   8,273 Views   Citations


This paper studies the flow structural interaction (FSI) within a hard disk drive (HDD) through the use of a novel coupling method. The interaction studied was the fluid induced vibration in the HDD. A two step coupling approach was used, where the fluid and structural components were solved sequentially. The result obtained was a ratio of 0.65 between the vibration amplitudes of a fixed head stack assembly (HSA) and a moving HSA. The ratio was next applied on a real 3.5 inch HDD, to allow the parameter to be further improved upon. A new benchmark index of 0.69 was developed from this. This parameter may allow future researchers to model the out of plane vibrations of a HSA easily, saving precious time. A 31% more accurate simulation of FSI within 3.5 inch HDD at 15000 rpm is achieved by the use of this new coupling method and benchmark index.

Conflicts of Interest

The authors declare no conflicts of interest.

Cite this paper

E. Ng, Q. Teo and N. Liu, "Numerical Investigation of Flow Structure Interaction Coupling Effects in Hard Disk Drives," World Journal of Mechanics, Vol. 2 No. 1, 2012, pp. 9-18. doi: 10.4236/wjm.2012.21002.


[1] R. Kral and E. Kreuzer, “Multibody Systems and Fluid- Structure Interactions with Application to Floating Structures,” Multibody System Dynamics, Vol. 3, No. 1, 1992, pp. 65-83. doi:10.1023/A:1009710901886
[2] S. Badia and R. Codina, “On Some Fluid-Structure Iterative Algorithms Using Pressure,” International Journal for Numerical Methods in Engineering, Vol. 72, No. 1, 2007, pp. 46-71. doi:10.1002/nme.1998
[3] Q. Zhang and T. Hisada, “Studies of the Strong Coupling and Weak Coupling Methods in FSI Analysis,” International Journal for Numerical Methods in Engineering, Vol. 60, No. 12, 2004, pp. 2013-2029. doi:10.1002/nme.1034
[4] V. Sankaran, J. Sitaraman, B. Flynt and C. Farhat, “Development of a Coupled and Unified Solution Method for Fluid-Structure Interactions,” Springer, Berlin, 2009.
[5] C. Liang, R. Kannan and Z. Wang, “A p-Multigrid Spectral Difference Method with Explicit and Implicit Smoothers on Unstructured Triangular Grids,” Computers and Fluids, Vol. 38, No. 2, 2009, pp. 254-265. doi:10.1016/j.compfluid.2008.02.004
[6] R. Kannan and Z. Wang, “A Study of Viscous Flux Formulations for a p-Multigrid Spectral Volume Navier Stokes Solver,” Journal of Scientific Computing, Vol. 41, No. 2, 2009, pp. 165-199. doi:10.1007/s10915-009-9269-1
[7] C. Bernardo and C. W. Shu, “The Runge-Kutta Discontinuous Galerkin Method for Conservation Laws V: Multidimensional Systems,” Journal of Computational Physics, Vol. 141, No. 2, 1998, pp. 199-224.
[8] ANSYS Fluent Software, 2011.
[9] K. Aruga, M. Suwa, K. Shimizu and T. Watanabe, “A Study on Positioning Error Caused by Flow Induced Vibration Using Helium-Filled Hard Disk Drives,” IEEE Transactions on Magnetics, Vol. 43, No. 9, 2007, pp. 3750-3755. doi:10.1109/TMAG.2007.902983
[10] N. Liu, Q. D. Zhang and K. Sundaravadivelu, “A New Fluid Structure Coupling Approach for High Frequency/ Small Deformation Engineering Application,” Asia-Pacific Magnetic Recording Conference, Singapore, 10-12 November, 2010, pp. 1-2.
[11] J. Videler, “Fish Swimming,” Chapman & Hall, London, 1993. doi:10.1007/978-94-011-1580-3

comments powered by Disqus

Copyright © 2018 by authors and Scientific Research Publishing Inc.

Creative Commons License

This work and the related PDF file are licensed under a Creative Commons Attribution 4.0 International License.