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Abstract
This paper presents a simulation study of load characteristics of aerostatic journal bearing with pocketed orifice-type restrictor. In order to analyze the influence of characteristic parameters of aerostatic journal bearing and lubricating gas, the computational fluid dynamics (CFD) software, FLUENT, is adopted and the whole three-dimensional models are built which contain the orifices and air chambers. The simulation results show that the velocity vectors of lubricating gas undergoes a significant change when the gas flows through the orifice and air chamber, and gas flow field in orifice-type restrictor should be taken into account when estimating aerostatic journal bearing performance. Furthermore, the paper has discussed the effect of axial location of orifices, supply gas pressure, rotating speed and eccentricity ratio on carrying capacity, stiffness and mass flow rate. When the aerostatic journal bearing works at a low rotating speed, static performance will provide the dominating load capacity, while when rotating speed ω is more than 5×104rpm under high eccentricity ratio, the dynamic performance is the main source of load capacity.
Original language | English |
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Title of host publication | Proceedings of the 20th International Conference on Automation and Computing |
Subtitle of host publication | Future Automation, Computing and Manufacturing |
Place of Publication | Piscataway, NJ. |
Publisher | IEEE |
Pages | 92-95 |
Number of pages | 4 |
ISBN (Print) | 9781909522022 |
DOIs | |
Publication status | Published - 27 Oct 2014 |
Event | IEEE 20th International Conference on Automation & Computing - Cranfield University, Cranfield, United Kingdom Duration: 12 Sept 2014 → 13 Sept 2014 |
Conference
Conference | IEEE 20th International Conference on Automation & Computing |
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Country/Territory | United Kingdom |
City | Cranfield |
Period | 12/09/14 → 13/09/14 |
Keywords
- dynamic performance
- load characteristics
- aerostatic
- orifice-type restrictor
- FLUENT
- statis performance
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- 1 Finished
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Micro-3D: Miniature Flexible & Reconfigurable Manufacturing System for 3D Micro-products
Luo, X. (Principal Investigator), Ion, W. (Co-investigator), Qin, Y. (Co-investigator), Jagadeesan, A. P. (Researcher) & Zeng, Q. (Researcher)
EPSRC (Engineering and Physical Sciences Research Council)
1/07/13 → 31/12/17
Project: Research