A new thermohydrodynamic analysis model for bump air foil bearings with a detailed thermal model of bump foil structures and rotor is presented. In the developed model, temperatures of lubricating air film, top foil, bump foils, bearing sleeve, and rotor are calculated simultaneously through an iterative process. Reynolds equation and 3D energy equation were applied to the air film, and energy equations were applied to all the other structures around the bearing. Energy and momentum equations were applied to cooling channels to predict spatial temperature distribution along the cooling channels. The thermal growth of the rotor, foil structure, bearing sleeve, and centrifugal growth of the rotor are also considered. For the accuracy of the model, effective heat transfer resistance between the top foil and bearing sleeve was measured for various conditions and implemented into the thermal analysis around the cooling channels. The model was also bench marked with published experimental results for verifications. Using a developed model, parametric studies were performed with different bearing nominal clearances, applied loads, rotating speeds, and cooling conditions through channels.
Skip Nav Destination
Article navigation
April 2010
Research Papers
Thermohydrodynamic Analyses of Bump Air Foil Bearings With Detailed Thermal Model of Foil Structures and Rotor
Donghyun Lee,
Donghyun Lee
Department of Mechanical and Aerospace Engineering,
University of Texas at Arlington
, 500 W. 1st Street, Arlington, TX 76019
Search for other works by this author on:
Daejong Kim
Daejong Kim
Department of Mechanical and Aerospace Engineering,
University of Texas at Arlington
, 500 W. 1st Street, Arlington, TX 76019
Search for other works by this author on:
Donghyun Lee
Department of Mechanical and Aerospace Engineering,
University of Texas at Arlington
, 500 W. 1st Street, Arlington, TX 76019
Daejong Kim
Department of Mechanical and Aerospace Engineering,
University of Texas at Arlington
, 500 W. 1st Street, Arlington, TX 76019J. Tribol. Apr 2010, 132(2): 021704 (12 pages)
Published Online: April 14, 2010
Article history
Received:
July 28, 2009
Revised:
January 11, 2010
Online:
April 14, 2010
Published:
April 14, 2010
Citation
Lee, D., and Kim, D. (April 14, 2010). "Thermohydrodynamic Analyses of Bump Air Foil Bearings With Detailed Thermal Model of Foil Structures and Rotor." ASME. J. Tribol. April 2010; 132(2): 021704. https://doi.org/10.1115/1.4001014
Download citation file:
Get Email Alerts
Static Characteristics of Hybrid Water-Lubricated Herringbone Groove Journal Bearing
J. Tribol (April 2025)
Related Articles
Thermohydrodynamic Analysis of Bump Type Gas Foil Bearings: A Model Anchored to Test Data
J. Eng. Gas Turbines Power (April,2010)
Thermohydrodynamic Model Predictions and Performance Measurements of Bump-Type Foil Bearing for Oil-Free Turboshaft Engines in Rotorcraft Propulsion Systems
J. Tribol (January,2010)
Transient Thermal Behavior of Preloaded Three-Pad Foil Bearings: Modeling and Experiments
J. Tribol (April,2011)
Related Proceedings Papers
Related Chapters
Even a Watched Pot Boils Eventually
Hot Air Rises and Heat Sinks: Everything You Know about Cooling Electronics Is Wrong
Energy Balance for a Swimming Pool
Electromagnetic Waves and Heat Transfer: Sensitivites to Governing Variables in Everyday Life
Average Shaft Centerline Plots
Fundamentals of Rotating Machinery Diagnostics