Slip and turbulence phenomena in journal bearings with application to implantable rotary blood pumps

Paul, Gordon, Rezaienia, Amin, Shen, Xiang, Avital, Eldad and Korakianitis, Theodosios (2016) Slip and turbulence phenomena in journal bearings with application to implantable rotary blood pumps. Tribology International, 104. pp. 157-165. ISSN 0301-679X

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Official URL: https://doi.org/10.1016/j.triboint.2016.08.032

Abstract

This paper describes an investigation into journal bearings with geometries and working fluid similar to centrifugal blood pumps. The aim is to describe the phenomena that cause these journal bearings to deviate from classical predictions. Experimental, analytical and numerical methods are used to investigate the behaviour of a range of bearings with geometries and working fluid similar to blood pumps. It was found that the clearance had a significant effect on the force-eccentricity characteristic of the bearing, with smallest and largest clearances deviating from classical predictions. Experimentally measured pressure distributions show that slip occurs when the clearance is small and that turbulence occurs with the largest clearances. The effects of these phenomena on lubricant pressure and blood compatibility are discussed.

Item Type: Article
Subjects: H200 Civil Engineering
H300 Mechanical Engineering
Department: Faculties > Engineering and Environment > Mechanical and Construction Engineering
Depositing User: Elena Carlaw
Date Deposited: 18 Jun 2020 09:47
Last Modified: 18 Jun 2020 10:00
URI: http://nrl.northumbria.ac.uk/id/eprint/43494

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