Research on load characteristics of aerostatic journal bearing with pocketed orifice-type restrictor

Dongxu Wu, Bo Wang, Xichun Luo

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

2 Citations (Scopus)

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.
LanguageEnglish
Title of host publicationProceedings of the 20th International Conference on Automation and Computing
Subtitle of host publicationFuture Automation, Computing and Manufacturing
Place of PublicationPiscataway, NJ.
PublisherIEEE
Pages92-95
Number of pages4
ISBN (Print)9781909522022
DOIs
Publication statusPublished - 27 Oct 2014
EventIEEE 20th International Conference on Automation & Computing - Cranfield University, Cranfield, United Kingdom
Duration: 12 Sep 201413 Sep 2014

Conference

ConferenceIEEE 20th International Conference on Automation & Computing
CountryUnited Kingdom
CityCranfield
Period12/09/1413/09/14

Fingerprint

Journal bearings
Orifices
Flow of gases
Gas supply
Air
Gases
Flow fields
Computational fluid dynamics
Stiffness
Flow rate

Keywords

  • dynamic performance
  • load characteristics
  • aerostatic
  • orifice-type restrictor
  • FLUENT
  • statis performance

Cite this

Wu, D., Wang, B., & Luo, X. (2014). Research on load characteristics of aerostatic journal bearing with pocketed orifice-type restrictor. In Proceedings of the 20th International Conference on Automation and Computing: Future Automation, Computing and Manufacturing (pp. 92-95). Piscataway, NJ.: IEEE. https://doi.org/10.1109/IConAC.2014.6935467
Wu, Dongxu ; Wang, Bo ; Luo, Xichun. / Research on load characteristics of aerostatic journal bearing with pocketed orifice-type restrictor. Proceedings of the 20th International Conference on Automation and Computing: Future Automation, Computing and Manufacturing. Piscataway, NJ. : IEEE, 2014. pp. 92-95
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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.",
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Wu, D, Wang, B & Luo, X 2014, Research on load characteristics of aerostatic journal bearing with pocketed orifice-type restrictor. in Proceedings of the 20th International Conference on Automation and Computing: Future Automation, Computing and Manufacturing. IEEE, Piscataway, NJ., pp. 92-95, IEEE 20th International Conference on Automation & Computing, Cranfield, United Kingdom, 12/09/14. https://doi.org/10.1109/IConAC.2014.6935467

Research on load characteristics of aerostatic journal bearing with pocketed orifice-type restrictor. / Wu, Dongxu; Wang, Bo; Luo, Xichun.

Proceedings of the 20th International Conference on Automation and Computing: Future Automation, Computing and Manufacturing. Piscataway, NJ. : IEEE, 2014. p. 92-95.

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

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N2 - 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.

AB - 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.

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Wu D, Wang B, Luo X. Research on load characteristics of aerostatic journal bearing with pocketed orifice-type restrictor. In Proceedings of the 20th International Conference on Automation and Computing: Future Automation, Computing and Manufacturing. Piscataway, NJ.: IEEE. 2014. p. 92-95 https://doi.org/10.1109/IConAC.2014.6935467