Abstract：Based on the equations of gap flow and squeezed flow,the viscous-modified solution under the slip boundary condition was obtained to calculate the damping characteristic of microfluid acting on a perforated disk with a centre hole.The correlation between the kinetic damping and dimensions of the perforated disk,such as the gap and the radius of the centre hole and the thickness of the disk,was obtained.An analytical expression of damping composed of slide film damping and squeeze film damping was presented.It was found that the damping of microfluid acting on the disk is correlative with surface characteristics of the disk.Suitable equivalent viscosity can be obtained by introducing a momentum accommodation coefficient to calculate the damping forces of microfluid acting on moving objects.A calculation example shows that the analytical solutions accord well with the numerical results obtained with finite element method.
王卫东, 贾建援. 微流体对中心开孔圆盘的阻尼特性[J]. 西南交通大学学报, 2006, 41(2): 218-222.
WANG Weidong, JIA Jianyuan. Damping Characteristics of Microfluid on Perforated Disks with a Centre Hole. Journal of SouthWest JiaoTong University, 2006, 41(2): 218-222.
