Technical Briefs

Determination of Viscosity Versus Pressure by Means of a Clearance Seal

[+] Author and Article Information
Peter Christiansen, Niels Schmidt Hansen, Martin Thomas Overdahl Lund, Jon Spangenberg

Department of Mechanical Engineering,
Technical University of Denmark,
Kongens Lyngby 2800, Denmark

Niels Bay

Department of Mechanical Engineering,
Technical University of Denmark,
Kongens Lyngby 2800, Denmark
e-mail: nbay@mek.dtu.dk

1Corresponding author.

Contributed by the Tribology Division of ASME for publication in the JOURNAL OF TRIBOLOGY. Manuscript received June 23, 2017; final manuscript received October 16, 2017; published online January 16, 2018. Assoc. Editor: Mihai Arghir.

J. Tribol 140(3), 034501 (Jan 16, 2018) (3 pages) Paper No: TRIB-17-1253; doi: 10.1115/1.4038579 History: Received June 23, 2017; Revised October 16, 2017

This paper describes the construction and testing of a simple, experimental tool setup that enables determination of the pressure–viscosity relationship for high viscosity oils. Comparing the determined pressure–viscosity relationship with a reference rheometer measuring the viscosity at ambient pressure yields reasonable agreement. The computed viscosity at elevated pressures was well represented by the Chu and Cameron model.

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Grahic Jump Location
Fig. 1

Plane Poiseuille flow

Grahic Jump Location
Fig. 2

Experimental tool setup

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Fig. 3

Recorded time-load (a) and time-stroke (b). The stars indicate parts of the curve with constant load.

Grahic Jump Location
Fig. 4

Experimentally determined pressure–viscosity relationship fitted with two models and their coefficients of determination R2

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Fig. 5

Viscosity, as function of shear strain rate, at 25 °C




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