Publication detail
Fluid flow measurements of 5P4E by particle tracking velocimetry
DOČKAL, K. ŠPERKA, P. KŘUPKA, I. HARTL, M.
English title
Fluid flow measurements of 5P4E by particle tracking velocimetry
Type
conference paper
Language
en
Original abstract
Lubricant flow in an elastohydrodynamic contact is investigated by new methodology based on particle tracking velocimetry. Measurement method provides positions of silver nanoparticles dissolved in the lubricant through several images captured by high speed camera. These are connected, in places of high probability of correct detection of identical particle on multiple images. Connected positions are linearly fitted to get average speed and after that statistically processed to obtain velocity profile. This method was applied on 5P4E base fluid, characterized by high viscosity and pressure sensitivity. Experimental results provide evidence about slide to roll ratio influence on the velocity profiles under piezoviscouse conditions. At low slide to roll ratios the profile shape match plug flow model with highly viscous core and slip on the solid-liquid interfaces. As the slide to roll ratio increases, corresponding velocity profile curvature is reduced.
English abstract
Lubricant flow in an elastohydrodynamic contact is investigated by new methodology based on particle tracking velocimetry. Measurement method provides positions of silver nanoparticles dissolved in the lubricant through several images captured by high speed camera. These are connected, in places of high probability of correct detection of identical particle on multiple images. Connected positions are linearly fitted to get average speed and after that statistically processed to obtain velocity profile. This method was applied on 5P4E base fluid, characterized by high viscosity and pressure sensitivity. Experimental results provide evidence about slide to roll ratio influence on the velocity profiles under piezoviscouse conditions. At low slide to roll ratios the profile shape match plug flow model with highly viscous core and slip on the solid-liquid interfaces. As the slide to roll ratio increases, corresponding velocity profile curvature is reduced.
Keywords in English
Elastohydrodynamic Lubrication; Rheology; Fluid Flow; Particle Tracking Velocimetry
Released
18.05.2017
Publisher
Aakdemie věd ČR, Ústav termomechaniky
Location
Česká republika
ISBN
978-80-214-5497-2
Book
ENGINEERING MECHANICS 2017
Pages from–to
274–277
Pages count
4
BIBTEX
@inproceedings{BUT141740,
author="Kryštof {Dočkal} and Petr {Šperka} and Ivan {Křupka} and Martin {Hartl},
title="Fluid flow measurements of 5P4E by particle tracking velocimetry",
booktitle="ENGINEERING MECHANICS 2017",
year="2017",
month="May",
pages="274--277",
publisher="Aakdemie věd ČR, Ústav termomechaniky",
address="Česká republika",
isbn="978-80-214-5497-2"
}