|
| Mechanical model of pneumatic levitation using porous media based on N-S equation |
| Received:August 21, 2015 Revised:December 15, 2015 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7511/jslx201606011 |
| KeyWord:fluid mechanics porous media pneumatic levitation air film modified secant method pressure distribution |
| Author | Institution |
| 黄磊 |
北京机械设备研究所, 北京 |
| 王生捷 |
北京机械设备研究所, 北京 |
| 彭雪明 |
北京机械设备研究所, 北京 |
| 何春涛 |
北京机械设备研究所, 北京 |
| 黄亮 |
北京机械设备研究所, 北京 |
|
| Hits: 1480 |
| Download times: 854 |
| Abstract: |
| A model of aerostatic thrust bearing including the characteristics of porous media and gap flow was established within a parallel plate in order to analyze the fly height characteristics of air film.The equation was solved by using modified secant method.Theoretical and experimental results show that calculated results which based on the simplified model of air film accord well with the experimental date.It turns out that the theoretical model is effective.The effects of air flow rate and bearing capacity on the fly height of air film were discussed through numerical results.The research indicates that the fly height of air film increases and the increment speed tends slow as a bearing capacity increases.In a certain range the fly height increases as the air flow rate increases and it declines over this range.Based on that,we can adjust the fly height with optimal way through controlling bearing capacity and air flow rate to satisfy the environmental requirements. |