This paper describes the pressure distribution in the bearing clearance of circular aerostatic thrust bearings with a single air supply inlet. For high air supply pressure, large bearing clearance and a relatively small bearing outer radius, it was believed that shock waves are caused and that a complex fluid flow structure is formed in the bearing clearance. Accordingly, analytical models based on the occurrence of shock wave in the bearing clearance have been proposed. Recently, very small aerostatic bearings have been used in various machine devices where the pressure distribution near the air inlets has a large influence on the bearing characteristics due to a short distance between air inlets and the bearing edge. In order to accurately predict various bearing characteristics for these kinds of bearings, a proper analytical model has to be established. However, it is very difficult to obtain the detailed information about the flow structure from flow visualization because of a very thin bearing clearance. Therefore, we calculated the flow field using computational fluid dynamics (CFD), which can solve the Navier-Stoke equations directly. It was found that the airflow just after entering the bearing clearance becomes turbulent in a region where relatively rapid pressure recovery occurs and that no shock wave is generated at the boundary between subsonic and supersonic flow. In addition, the numerical results presented show good agreement with experimental data.
Skip Nav Destination
STLE/ASME 2006 International Joint Tribology Conference
October 23–25, 2006
San Antonio, Texas, USA
Conference Sponsors:
- Tribology Division
ISBN:
0-7918-4259-2
PROCEEDINGS PAPER
Numerical Calculations of Pressure Distribution in the Bearing Clearance of Circular Aerostatic Thrust Bearings With a Single Air Supply Inlet Available to Purchase
Shigeka Yoshimoto,
Shigeka Yoshimoto
Tokyo University of Science, Tokyo, Japan
Search for other works by this author on:
Makoto Yamamoto,
Makoto Yamamoto
Tokyo University of Science, Tokyo, Japan
Search for other works by this author on:
Kazuyuki Toda
Kazuyuki Toda
Chiba Institute of Science, Choshi-city, Chiba, Japan
Search for other works by this author on:
Shigeka Yoshimoto
Tokyo University of Science, Tokyo, Japan
Makoto Yamamoto
Tokyo University of Science, Tokyo, Japan
Kazuyuki Toda
Chiba Institute of Science, Choshi-city, Chiba, Japan
Paper No:
IJTC2006-12251, pp. 479-484; 6 pages
Published Online:
October 2, 2008
Citation
Yoshimoto, S, Yamamoto, M, & Toda, K. "Numerical Calculations of Pressure Distribution in the Bearing Clearance of Circular Aerostatic Thrust Bearings With a Single Air Supply Inlet." Proceedings of the STLE/ASME 2006 International Joint Tribology Conference. Part A: Tribomaterials; Lubricants and Additives; Elastohydrodynamic Lubrication; Hydrodynamic Lubrication and Fluid Film Bearings; Rolling Element Bearings; Engine Tribology; Machine Components Tribology; Contact Mechanics. San Antonio, Texas, USA. October 23–25, 2006. pp. 479-484. ASME. https://doi.org/10.1115/IJTC2006-12251
Download citation file:
13
Views
Related Proceedings Papers
Related Articles
Tribological Study of a Slider Bearing in the Supersonic Regime
J. Tribol (October,2016)
Thermal Response of Supersonic Airflow to a Fin Protrusion Situated on a Curved Surface
J. Heat Transfer (November,2009)
Related Chapters
Compressive Deformation of Hot-Applied Rubberized Asphalt Waterproofing
Roofing Research and Standards Development: 10th Volume
Applications
Introduction to Finite Element, Boundary Element, and Meshless Methods: With Applications to Heat Transfer and Fluid Flow
Introduction
Axial-Flow Compressors