Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
797004 | Journal of Fluids and Structures | 2013 | 10 Pages |
Abstract
In aerostatic bearings, high speed air flow may induce small vibration, which has been harmful to the improvement of moving and positioning accuracy of aerostatically supported devices in ultra-precision applications. In this paper, the transient flow field in the aerostatic bearing is numerically investigated using the large eddy simulation method. Turbulent structures are studied and vortex shedding phenomenon is discovered in the bearing recess. Our computational results demonstrate that vortex shedding causes pressure fluctuation in the bearing clearance. Relationship between pressure fluctuation and bearing vibration is established based on our simulation results and experimentally measured vibration strength.
Related Topics
Physical Sciences and Engineering
Engineering
Mechanical Engineering
Authors
Jincheng Zhu, Han Chen, Xuedong Chen,