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Bio-lubricant Behavior under Reciprocating Motion in Mini-Channel
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Machine Elements.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Fluid and Experimental Mechanics.ORCID iD: 0000-0001-7599-0895
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Machine Elements.
2016 (English)Conference paper, Oral presentation only (Refereed)
Abstract [en]

Synovial fluid (SF) is articular joint lubrication. It contains a linear biopolymer called Hyaluronic acid(HA), which causes the viscoelastic behavior. Several studies on viscoelasticity of synovial fluid orHA solutions with different concentration and molecular weight have been carried out withrheometers. However, there are very few studies on the effect of viscoelasticity on HA solutionsmovement and velocity distribution inside the joint gap. Therefore, in this study, HA solutions withdifferent concentrations were studied under a sinusoidal reciprocating movement inside a rectangularmini-channel. This study focuses on deriving velocity distribution along channel width with MicroParticle Image Velocimetry (micro-PIV). Very high viscosity of the HA solutions suggests a quasisteadybehavior for this solution under investigated sinusoidal movement. However, the resultsindicated that the steady state laws are not applicable for estimating the HA behavior because ofspecial polymeric behavior of the HA chains inside the solutions.

Place, publisher, year, edition, pages
2016.
National Category
Tribology Fluid Mechanics and Acoustics
Research subject
Machine Elements; Fluid Mechanics
Identifiers
URN: urn:nbn:se:ltu:diva-37185Local ID: b2173d2a-858c-41ad-8926-f7ddfa0b12eeOAI: oai:DiVA.org:ltu-37185DiVA: diva2:1010683
Conference
STLE Annual Meeting & Exhibition : 15/05/2016 - 19/05/2016
Note
Godkänd; 2016; 20160722 (alasaf)Available from: 2016-10-03 Created: 2016-10-03 Last updated: 2017-11-25Bibliographically approved

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CiteExportLink to record
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