CFD modeling compared to temperature and friction measurements of an EHL line contact

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Title: CFD modeling compared to temperature and friction measurements of an EHL line contact
Authors: Hartinger, M
Reddyhoff, T
Item 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.
Issue Date: 1-Oct-2018
Date of Acceptance: 9-May-2018
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 (
Sponsor/Funder: Engineering & Physical Science Research Council (EPSRC)
Funder's Grant Number: EP/J002100/1
Keywords: 0913 Mechanical Engineering
Mechanical Engineering & Transports
Publication Status: Published
Online Publication Date: 2018-05-09
Appears in Collections:Faculty of Engineering
Mechanical Engineering

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