CFD modeling compared to temperature and friction measurements of an EHL line contact
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Published version
Author(s)
Hartinger, Marcus
Reddyhoff, T
Type
Journal Article
Abstract
In this paper, predictions from CFD modeling are compared against measurements of surface temperatures and friction for an EHL line contact lubricated with the fluid Santotrac 50. Two slide-to-roll-ratios (SRR), 50% and 100%, and entrainment velocities ranging from 0.211 to 1.13 m/s are considered. Very good agreement is shown for the 50% SRR cases, with only a 3% deviation in friction coefficient values. At 100% SRR, the deviation in friction increases to 3–7% which is attributed to deficiencies in the modeling approach with regard to shear-thinning. The temperature profiles agree reasonably well at 50% SRR and show larger deviations at 100% SRR. For all cases, the formation of a shear-band in the center of the fluid film is predicted. This is very pronounced for 100% SRR, although likely to be over-estimated by this CFD-approach. The data presented here serve as a basis from which further refinements in the modeling and measurements shown can be made.
Date Issued
2018-10-01
Date Acceptance
2018-05-09
Citation
Tribology International, 2018, 126, pp.144-152
ISSN
0301-679X
Publisher
Elsevier
Start Page
144
End Page
152
Journal / Book Title
Tribology International
Volume
126
Copyright Statement
© 2018 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY license (http://creativecommons.org/licenses/BY/4.0/
Sponsor
Engineering & Physical Science Research Council (EPSRC)
Identifier
https://www.sciencedirect.com/science/article/pii/S0301679X18302408?via=ihub
Grant Number
EP/J002100/1
Subjects
0913 Mechanical Engineering
Mechanical Engineering & Transports
Publication Status
Published
Date Publish Online
2018-05-09