Publication detail

The Influence of Measurement Uncertainties and Input Parameters on Hydrostatic Bearing Performance: Analytical, Experimental, and Numerical Comparison

FOLTÝN, J. MACCIONI, L. MICHALEC, M. CONCLI, F. SVOBODA, P.

Original Title

The Influence of Measurement Uncertainties and Input Parameters on Hydrostatic Bearing Performance: Analytical, Experimental, and Numerical Comparison

Type

conference paper

Language

English

Original Abstract

Design and real-time control of hydrostatic bearings (HS) demand accurate models capable of reliably predicting bearing behavior under varying operational conditions. Analytical models have proven insufficient to estimate key parameters such as carrying capacity, recess pressure, film thickness, or flow rate simultaneously. To address this limitation, Computational Fluid Dynamics (CFD) has emerged as a valuable tool in recent years. However, the accuracy of operational data measurements, used to set numerical and analytical models, plays a significant role in uncertainty propagation. This study concerns an experimental campaign and the development of a CFD model in the OpenFOAM® environment. To reproduce the experimental conditions, numerical and analytical models are set using different input parameters, i.e. flow rate or recess pressure, considering extreme operational conditions tied to the accuracy of experimental data. Results reveal that, while average CFD values exhibit consistent errors in estimating operational parameters, experimental and numerical uncertainty ranges overlap under the investigated operational conditions. In contrast, analytical estimation leads to clear discrepancies, even when considering measurement uncertainties. Furthermore, concerning carrying capacity estimation, recess pressure emerges as the input parameter yielding more satisfactory results. The findings emphasize the importance of considering measurement uncertainties in setting numerical and analytical models for HS bearings, providing valuable insights for their accurate design and real-time control.

Keywords

Hydrostatic lubrication, Thin lubricant layer simulation, CFD simu-lation, OpenFOAM

Authors

FOLTÝN, J.; MACCIONI, L.; MICHALEC, M.; CONCLI, F.; SVOBODA, P.

Released

19. 10. 2024

Publisher

Springer

ISBN

978-3-031-70461-1

Book

Latest Advancements in Mechanical Engineering. ISIEA 2024. Lecture Notes in Networks and Systems

Edition

1

Edition number

1

Pages from

12

Pages to

22

Pages count

11

URL

https://doi.org/10.1007/978-3-031-70462-8_2

BibTex

@inproceedings{BUT189922,
  author="Jan {Foltýn} and Lorenzo {Maccioni} and Michal {Michalec} and Franco {Concli} and Petr {Svoboda}",
  title="The Influence of Measurement Uncertainties and Input Parameters on Hydrostatic Bearing Performance: Analytical, Experimental, and Numerical Comparison",
  booktitle="Latest Advancements in Mechanical Engineering. ISIEA 2024. Lecture Notes in Networks and Systems",
  year="2024",
  series="1",
  number="1",
  pages="12--22",
  publisher="Springer",
  doi="10.1007/978-3-031-70462-8\{_}2",
  isbn="978-3-031-70461-1",
  url="https://doi.org/10.1007/978-3-031-70462-8_2"
}