0
research-article

EFFECT OF FOIL GEOMETRY ON THE STATIC PERFORMANCE OF THRUST FOIL BEARINGS

[+] Author and Article Information
Gen Fu

Virginia Tech, Dept. of Biomedical Engineering and Mechanics, Laboratory for Turbomachinery and Components, Norris Hall, Room 107, Virginia Tech, 495 Old Turner Street, Blacksburg, VA, USA, 24061
gen8@vt.edu

Alexandrina Untaroiu

Virginia Tech, Dept. of Biomedical Engineering and Mechanics, Laboratory for Turbomachinery and Components
alexu@vt.edu

Erik E. Swanson

Xdot Engineering and Analysis, PLLC, Charlottesville, VA
erik@xdotea.com

1Corresponding author.

ASME doi:10.1115/1.4038693 History: Received August 28, 2017; Revised October 04, 2017

Abstract

Gas foil bearing can operate in extreme conditions such as high temperature and high rotating speed, compared to traditional bearings. They also provide better damping and stability characteristics and have larger tolerance to debris and rotor misalignment. In the previous decades, a lot of theoretical and experimental work have been conducted to investigate the properties of gas foil bearings. However, very little work has been done to study the influence of the foil bearing pad geometry configuration using CFD. This study proposes a robust approach to analyze the effect of the foil geometry on the performance of a six pads thrust foil bearing. A 3D CFD model for a parallel six-pads thrust foil bearing is created. In order to predict the thermal property, the total energy with viscous dissipation is used. The geometry of the thrust foil bearing is parameterized and analyzed using DOE methodology. The selected geometry parameters of the foil structure include: minimum film thickness, inlet film thickness, the ramp extent on the inner circle, the ramp extent on the outer circle, the arc extent of the pad, and the orientation of the leading edge. The objectives in the sensitivity study are load force and maximal temperature. An optimal foil geometry is derived based on the results of the DOE process by using a goal driven optimization technique to maximize the load force and minimize the maximal temperature. The results show that the geometry of foil structure is a key factor for foil bearing performance.

Copyright (c) 2017 by ASME
Your Session has timed out. Please sign back in to continue.

References

Figures

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In