Prediction of dynamic characteristics of foil thrust bearings using computational fluid dynamics
Paper
Paper/Presentation Title | Prediction of dynamic characteristics of foil thrust bearings using computational fluid dynamics |
---|---|
Presentation Type | Paper |
Authors | Qin, Kan, Jahn, I. H. and Jacobs, P. A. |
Journal or Proceedings Title | Proceedings of the 20th Australasian Fluid Mechanics Conference (AFMC 2016) |
Number of Pages | 4 |
Year | 2016 |
Place of Publication | Australia |
ISBN | 9781740523776 |
Web Address (URL) of Paper | https://www.afms.org.au/proceedings/20/Qin_et_al_2016.pdf |
Web Address (URL) of Conference Proceedings | https://www.afms.org.au/proceedings/20.html |
Conference/Event | 20th Australasian Fluid Mechanics Conference (AFMC 2016) |
Event Details | 20th Australasian Fluid Mechanics Conference (AFMC 2016) Parent Australasian Fluid Mechanics Conference Delivery In person Event Date 05 to end of 08 Dec 2016 Event Location Perth, Australia |
Abstract | A three dimensional computational fluid dynamic (CFD) method is proposed to predict rotordynamic coefficients for foil thrust bearings. Unsteady CFD coupled with a two-dimensional structural model is used to solve the transient load capacity of the bearing for the synchronous rotor whirling modes. The rotordynamic coefficient are identified using these transient load capacities and rotor motions. The numerical results show that the rotordynamic coefficients predicted with the proposed method agree well with results in the literature. The proposed method and rotor whirling model can be used to perform a reasonably accurate prediction of the synchronous rotordynamic force coefficients and is able to calculate rotordynamic coefficients of foil thrust bearings across a wide frequency range within a single simulation. Finally, the stiffness and damping coefficients for CO2 foil thrust bearings are obtained. It is found that CO2 foil thrust bearings show a smaller damping effect compared to air foil bearings, but the stiffness coefficient is comparable. |
Contains Sensitive Content | Does not contain sensitive content |
ANZSRC Field of Research 2020 | 4012. Fluid mechanics and thermal engineering |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions, but may be accessed online. Please see the link in the URL field. |
Byline Affiliations | University of Queensland |
Institute for Advanced Engineering and Space Sciences (Research) |
https://research.usq.edu.au/item/z2178/prediction-of-dynamic-characteristics-of-foil-thrust-bearings-using-computational-fluid-dynamics
47
total views0
total downloads1
views this month0
downloads this month