Object
Title: The non-unicity of the film thickness in the hydrodynamic lubrication: novel approach generating equivalent micro-grooves and roughness
Contributor:
Group publication title:
Abstract:
Since the 1960s, all studies have assumed that a film thickness "h" provides a unique pressure field "p" by resolving the Reynolds equation. However, it is relevant to investigate the film thickness unicity under a given hydrodynamic pressure within the inverse theory. ; This paper presents a new approach to deduce from an initial film thickness a widespread number of thicknesses providing the same hydrodynamic pressure under a specific condition of gradient pressure. ; For this purpose, three steps were presented: 1) computing the hydrodynamic pressure from an initial film thickness by resolving the Reynolds equation with Gümbel`s cavitation model, 2) using a new algorithm to generate a second film thickness, 3) comparing and validating the hydrodynamic pressure produced by both thicknesses with the modified Reynolds equation. ; Throughout three surface finishes: the macro-shaped, micro-textured, and rough surfaces, it has been demonstrated that under a specific hydrodynamic pressure gradient, several film thicknesses could generate the same pressure field with a slight difference by considering cavitation. ; Besides, this paper confirms also that with different ratios of the averaged film thickness to the root mean square (RMS) similar hydrodynamic pressure could be generated, thereby the deficiency of this ratio to define the lubrication regime as commonly known from Patir and Cheng theory.
Publisher:
Zielona Góra: Uniwersytet Zielonogórski
Format:
Resource Identifier:
DOI:
Pages:
Source:
IJAME, volume 26, number 3 (2021)
Language:
License:
License CC BY-NC-ND 4.0:
Rights:
Biblioteka Uniwersytetu Zielonogórskiego
Object collections:
- Digital Library of Zielona Góra > Repository > Faculties > Faculty of Mechanical Engineering
- Digital Library of Zielona Góra > Repository > Types of work > Articles
- Digital Library of Zielona Góra > Repository > Scientific journals and UZ publishing series > International Journal of Applied Mechanics and Engineering (IJAME)
- Digital Library of Zielona Góra > Repository > Scientific journals and UZ publishing series > International Journal of Applied Mechanics and Engineering (IJAME) > International Journal of Applied Mechanics and Engineering (IJAME) (2021)
Last modified:
Jul 6, 2023
In our library since:
Feb 7, 2023
Number of object content hits:
95
All available object's versions:
https://zbc.uz.zgora.pl/publication/77627
Show description in RDF format:
Show description in OAI-PMH format:
-
International Journal of Applied Mechanics and Engineering (IJAME)
-
International Journal of Applied Mechanics and Engineering (IJAME), volume 29 (2024)
-
International Journal of Applied Mechanics and Engineering (IJAME), volume 28 (2023)
-
International Journal of Applied Mechanics and Engineering (IJAME), volume 27 (2022)
-
International Journal of Applied Mechanics and Engineering (IJAME), volume 26 (2021)
-
International Journal of Applied Mechanics and Engineering (IJAME), volume 26, number 1 (2021)
-
International Journal of Applied Mechanics and Engineering (IJAME), volume 26, number 2 (2021)
-
International Journal of Applied Mechanics and Engineering (IJAME), volume 26, number 3 (2021)
- International Journal of Applied Mechanics and Engineering (IJAME), volume 26, number 3 (2021) - Contents
- Numerical thermo-mechanical strength analysis of an IC engine component
- Probabilistic mesoscale analysis of concrete beams subjected to flexure
- Comparing performance of cross-laminated timber and reinforced concrete walls
- The non-unicity of the film thickness in the hydrodynamic lubrication: novel approach generating equivalent micro-grooves and roughness
- Periodic flow of a second grade fluid due to the disks executing non-torsional oscillations in an orthogonal rheometer under the influence of a magnetic field
- Flow features of thermophoretic MHD viscous fluid flow past a converging channel with heat source and chemical reaction
- Wavelet-based numerical solution for MHD boundary-layer flow due to stretching sheet
- Effects of pressure gradient on convective heat transfer in a boundary layer flow of a Maxwell fluid past a stretching sheet
- Review of mechanical vapour compression refrigeration system part 2: performance challenge
- Heat and mass transfer effect on an infinite vertical plate in the presence of hall current and thermal radiation with variable temperature
- Static bending of isotropic circular cylindrical shells based on the higher order shear deformation theory of Reddy and Liu
- New iterative method of solving nonlinear equations in fluid mechanics
- An effect of electrokinetics phenomena on nonlinear wave propagation in bubbly liquids
- Three-bladed horizontal axis water turbine simulations with free surface effects
- Numerical study on dimensions and orientation effect of semi-elliptical cracks in PE100 pipelines
-
International Journal of Applied Mechanics and Engineering (IJAME), volume 26, number 4 (2021)
-
International Journal of Applied Mechanics and Engineering (IJAME), volume 26, number 1 (2021)
-
International Journal of Applied Mechanics and Engineering (IJAME), volume 25 (2020)
-
International Journal of Applied Mechanics and Engineering (IJAME), volume 24 (2019)
-
International Journal of Applied Mechanics and Engineering (IJAME), volume 23 (2018)
-
International Journal of Applied Mechanics and Engineering (IJAME), volume 22 (2017)
-
International Journal of Applied Mechanics and Engineering (IJAME), volume 21 (2016)
-
International Journal of Applied Mechanics and Engineering (IJAME), volume 20 (2015)
-
International Journal of Applied Mechanics and Engineering (IJAME), volume 19 (2014)
-
International Journal of Applied Mechanics and Engineering (IJAME), volume 18 (2013)
-
International Journal of Applied Mechanics and Engineering (IJAME), volume 29 (2024)
