Imperial College London


Faculty of EngineeringDepartment of Mechanical Engineering

Senior Lecturer



+44 (0)20 7594 8991j.wong




671City and Guilds BuildingSouth Kensington Campus






BibTex format

author = {Galmiche, B and Ponjavic, A and Wong, J},
doi = {13/134005},
journal = {Journal of Physics: Condensed Matter},
title = {Flow measurements of a polyphenyl ether oil in an elastohydrodynamic contact},
url = {},
volume = {28},
year = {2016}

RIS format (EndNote, RefMan)

AB - A novel methodology, based on the use of phosphorescence imaging, is applied to determine the local through-thickness velocity profile of lubricant in an elastohydrodynamic (EHD) contact. The technique has spatial and temporal resolutions of 40 µm and 340 µs respectively and thus allows lubricant rheology to be investigated at conditions close to service conditions. The capability of the newly-developed method is verified by examining the flow of 5P4E polyphenyl ether, a lubricant base fluid used in very high temperature applications and well-known for its high viscosity-pressure coefficient. Experimental results highlight the effect of the contact pressure on the velocity profile of this fluid in lubricated contacts. At low pressures, the velocity profile of 5P4E is close to linear, characteristic of Couette flow. As the local pressure increases, its velocity profile progressively deviates from a Couette profile and shear banding is evident at high pressure.
AU - Galmiche,B
AU - Ponjavic,A
AU - Wong,J
DO - 13/134005
PY - 2016///
SN - 0953-8984
TI - Flow measurements of a polyphenyl ether oil in an elastohydrodynamic contact
T2 - Journal of Physics: Condensed Matter
UR -
UR -
VL - 28
ER -