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100+ datasets found
  1. t

    Supplementary Material: Temperature-dependent wall slip of Newtonian...

    • tudatalib.ulb.tu-darmstadt.de
    • commons.datacite.org
    Updated May 2023
    + more versions
  2. t

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    • tudatalib.ulb.tu-darmstadt.de
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  8. t

    Data from: UKP ASPECT Corpus

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  9. t

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    • tudatalib.ulb.tu-darmstadt.de
    Updated 2017
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    • tudatalib.ulb.tu-darmstadt.de
    Updated Jun 18, 2021
  12. t

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    Updated 2020
  13. t

    The TYC Dataset for Understanding Instance-Level Semantics and Motions of...

    • tudatalib.ulb.tu-darmstadt.de
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  14. t

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    Updated Feb 18, 2020
  15. t

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  17. t

    Data from: UKP Convincing Arguments v1

    • tudatalib.ulb.tu-darmstadt.de
    Updated 2016
  18. t

    Data from: Data of the publication: Stability, Speed, and Constraints for...

    • tudatalib.ulb.tu-darmstadt.de
    Updated Jun 2022
    + more versions
  19. t

    Multi-StyleGAN weights

    • tudatalib.ulb.tu-darmstadt.de
    Updated 2021
  20. t

    Data from: Annotation Error Detection: Analyzing the Past and Present for a...

    • tudatalib.ulb.tu-darmstadt.de
    Updated Mar 2023
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Pelz, Peter F.; Corneli, Tobias; Mehrnia, Seyedmajid; Kuhr, Maximilian M. G. (2023). Supplementary Material: Temperature-dependent wall slip of Newtonian lubricants [Dataset]. http://doi.org/10.48328/tudatalib-1146

Supplementary Material: Temperature-dependent wall slip of Newtonian lubricants

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2 scholarly articles cite this dataset (View in Google Scholar)
Dataset updated
May 2023
Authors
Pelz, Peter F.; Corneli, Tobias; Mehrnia, Seyedmajid; Kuhr, Maximilian M. G.
License

Attribution 4.0 (CC BY 4.0)https://creativecommons.org/licenses/by/4.0/
License information was derived automatically

Description

Repository containing the data included in "Pelz, P., Corneli, T., Mehrnia, S., & Kuhr, M. (2022). Temperature-dependent wall slip of Newtonian lubricants. Journal of Fluid Mechanics, 948, A8. doi:10.1017/jfm.2022.629". In the paper, (i) the measurement, (ii) interpretation and (iii) technical impact of temperature-dependent wall slip and its activation energy for polar and non-polar hydrocarbon Newtonian fluids moving relative to machined metal surfaces is discussed. A newly developed apparatus, the slip length tribometer (SLT), overcomes the drawbacks of existing measurement devices in terms of characterising relevant rough surfaces by measuring the slip length at different temperatures over a sufficiently large wetted area. The experimental data show that the bulk viscosity and slip length at the fluid–metal interface is independent of the shear rate up to 10^5 s−1, being consistent with recent results from molecular dynamics simulations by Mehrnia & Pelz. Furthermore, the activation energies for wall slip and bulk shear determined by means of the SLT differ by a factor of two, for non-polar hydrocarbon molecules sliding relative to metal walls. This difference is explained by a generalised Eyring model applied to wall slip. The paper closes with the impact of wall slip on Sommerfeld’s similarity theory of tribology and the resulting Stribeck curve. For this purpose, Reynolds’ equation generalised for wall slip is solved in combination with the experimentally determined constitutive relations for bulk shear and wall slip to predict typical characteristics of journal bearings. The results show that, for a typical journal bearing, where the ratio of slip length to average bearing clearance is of the order of 10^−2, the influence of wall slip on both load-carrying capacity and dissipation is not negligible. This work combines nanofluidics and tribology in order to provide methods and knowledge for e.g. tailor-made fluids and interfaces.

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