Is Elastohydrodynamic Minimum Film Thickness Truly Governed by Inlet Rheology?
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F23%3APU150534" target="_blank" >RIV/00216305:26210/23:PU150534 - isvavai.cz</a>
Result on the web
<a href="https://link.springer.com/article/10.1007/s11249-023-01771-y" target="_blank" >https://link.springer.com/article/10.1007/s11249-023-01771-y</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/s11249-023-01771-y" target="_blank" >10.1007/s11249-023-01771-y</a>
Alternative languages
Result language
angličtina
Original language name
Is Elastohydrodynamic Minimum Film Thickness Truly Governed by Inlet Rheology?
Original language description
This work investigates the governing mechanisms of minimum film thickness in elastohydrodynamic lubricated contacts. Up until now, it was thought to be governed by lubricant rheology in the low-pressure contact inlet. Through numerical simulations of EHL line and circular contacts, lubricated with fluids having the same low-pressure viscosity, but a very different response at high-pressure, minimum film thickness is shown to be governed by lubricant inlet rheology only in the theoretical line contact configuration. In real contacts however, it is not only governed by inlet rheology, but also by the high-pressure viscosity response of the lubricant. It is observed that the greater the viscosity at high pressure, the lower the minimum film thickness would be, as a result of reduced lateral flow out of the contact. Conservation of mass requires then that a higher minimum film thickness would be attained along the central line of the contact, in the entrainment direction. These findings corroborate well with experimental observations.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20301 - Mechanical engineering
Result continuities
Project
<a href="/en/project/GA21-28352S" target="_blank" >GA21-28352S: Rheological properties of thin lubricating films in point contacts at transition to mixed lubrication</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Tribology Letters
ISSN
1023-8883
e-ISSN
1573-2711
Volume of the periodical
71
Issue of the periodical within the volume
3
Country of publishing house
US - UNITED STATES
Number of pages
9
Pages from-to
„“-„“
UT code for WoS article
001033902500001
EID of the result in the Scopus database
2-s2.0-85165620715