Journal article
Elastohydrodynamic lubricant flow with nanoparticle tracking
- Abstract:
- Lubricants operating in elastohydrodynamic (EHD) contacts exhibit local variations in rheological properties when the contact pressure rises. Direct evidence of this behaviour has only been obtained by examining through-thickness velocity profiles U(z) of lubricants in a contact using luminescence-based imaging velocimetry. In the present study, nanoparticles (NPs) are added to polybutene (PB) as tracers to investigate the effect of pressure on the flow of PB in an EHD contact. By tracking NPs in the contact, particle velocity distributions f(U) under various pressures are obtained and found to be pressure dependent. Results show quantitatively that f(U) and U(z) are correlated and thus confirm that U(z) of PB changes from Couette flow to partial plug flow above a critical pressure. This confirmation highlights the complexity of lubricant rheology in a high pressure contact.
- Publication status:
- Published
- Peer review status:
- Peer reviewed
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- Files:
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(Preview, Version of record, pdf, 1.2MB, Terms of use)
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- Publisher copy:
- 10.1039/c8ra09396b
Authors
- Publisher:
- Royal Society of Chemistry
- Journal:
- RSC Advances More from this journal
- Volume:
- 9
- Pages:
- 1441-1450
- Publication date:
- 2019-01-11
- Acceptance date:
- 2018-12-22
- DOI:
- EISSN:
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2046-2069
- Language:
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English
- Pubs id:
-
pubs:967740
- UUID:
-
uuid:c921e61e-9c48-4f02-ba8d-1070fcb5b745
- Local pid:
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pubs:967740
- Source identifiers:
-
967740
- Deposit date:
-
2019-02-01
Terms of use
- Copyright holder:
- Royal Society of Chemistry
- Copyright date:
- 2019
- Notes:
- © The Royal Society of Chemistry 2019. Open Access Article. Published on 11 January 2019. This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.
- Licence:
- CC Attribution (CC BY)
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