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On the Flow Dynamic...
On the Flow Dynamics of Polymer Greases
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- Farré-Lladós, Josep (författare)
- Mechanical Engineering Department, UPC, Technical University of Catalonia, 08222 Terrassa, Spain
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- Westerberg, Lars-Göran (författare)
- Luleå tekniska universitet,Strömningslära och experimentell mekanik
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- Casals-Terré, Jasmina (författare)
- Mechanical Engineering Department, UPC, Technical University of Catalonia, 08222 Terrassa, Spain
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- Leckner, Johan (författare)
- Axel Christiernsson International AB, SE-449 11 Nol, Sweden
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- Westbroek, René (författare)
- Axel Christiernsson International AB, SE-449 11 Nol, Sweden
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(creator_code:org_t)
- 2022-04-13
- 2022
- Engelska.
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Ingår i: Lubricants. - : MDPI. - 2075-4442. ; 10:4
- Relaterad länk:
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https://doi.org/10.3...
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https://ltu.diva-por... (primary) (Raw object)
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https://urn.kb.se/re...
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https://doi.org/10.3...
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Abstract
Ämnesord
Stäng
- In this paper, the flow dynamics of polymer greases was investigated using micro-particle image velocimetry. Polymer greases have a different thickener structure, compared to widely used lithium-based greases, and they have the well-known ability to release oil. How these properties affect grease deformation and its ability to flow is investigated and compared to the corresponding behavior of a lithium complex grease with the same consistency. Two main tests were carried out, where velocity profiles in a straight channel were measured and analyzed, and velocity evolution during the transition period from a no-flow to a fully-established flow was measured, respectively. It was found that the polymer grease flow dynamics is different from that of the lithium grease. This indicates that the internal structure of the grease and the grease ability to bleed oil have a strong influence on the deformation on a global scale, which in turn entails other lubricating abilities for the two grease types.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik -- Tribologi (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering -- Tribology (hsv//eng)
Nyckelord
- lubricating grease
- polymer thickener
- lithium grease
- flow dynamics
- rheology
- micro-particle image velocimetry
- oil bleeding
- transitional flow
- Strömningslära
- Fluid Mechanics
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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