Modified least square finite difference method for solving the gas film lubrication equation in the head/disk interface

作者：Yang, T. Y.; Shi, B. J.^*; Ge, P. Q.; Bai, X.

来源：Computational Mechanics, 2013, 52(3): 485-497.

DOI：10.1007/s00466-012-0824-5

• Least square finite difference
• Gas film lubrication
• Head/disk interface
• Air bearing surface

A modified least square finite difference (LSFD) method is proposed to solve the gas film lubrication equation in the head/disk interface in hard disk drives (HDDs). In the modified LSFD scheme, around a reference node there are 24 regular distribution supporting points, and a new scaling matrix is used to replace the one used in the general LSFD method. A least square technique is used to smooth the first-order derivative of flying height where discontinuities occur. Numerical examples show that the modified LSFD method can overcome divergence problem of the general LSFD method in complicated cases and has higher computational efficiency.

• 出版日期2013-9
• 单位山东建筑大学; 山东大学