All Outputs (5)

Assessment of errors induced by the anomalous dispersion of high frequency shear waves in rheometrical measurements on gelling systems (2004)
Journal Article
Jones, R., Ravji, S., Hawkins, K., Al-Hussany, A., Williams, P., & Williams, R. (2004). Assessment of errors induced by the anomalous dispersion of high frequency shear waves in rheometrical measurements on gelling systems. Journal of Non-Newtonian Fluid Mechanics, 124(1-3), 11-24. https://doi.org/10.1016/j.jnnfm.2004.07.007

The principal objectives of the work reported in this paper were two-fold. Firstly, to assess, by means of the numerical simulation of transverse wave propagation within a linear viscoelastic medium, the degree to which wavegroup propagation involvin... Read More about Assessment of errors induced by the anomalous dispersion of high frequency shear waves in rheometrical measurements on gelling systems.

Cavitation Properties of Oils Under Dynamic Stressing by Tension (2004)
Journal Article
Williams, P. R., & Williams, R. L. (2004). Cavitation Properties of Oils Under Dynamic Stressing by Tension. Journal of Fluids Engineering, 127(2), 282. https://doi.org/10.1115/1.1881692

We report measurements of the effective tensile strength FcFc of commercial “multigrade” oils (in the SAE viscosity grades 5W-30 and 10W-40) over a range of temperatures TT, which are representative of those encountered under their normal operating c... Read More about Cavitation Properties of Oils Under Dynamic Stressing by Tension.

Cavitation and the tensile strength of liquids under dynamic stressing (2004)
Journal Article
Williams, P. R., & Williams, R. L. (2004). Cavitation and the tensile strength of liquids under dynamic stressing. Molecular Physics, 102(19-20), 2091-2102. https://doi.org/10.1080/00268970412331292786

This paper discusses the differences between the results of various measurements of the effective tensile strength (F c ) of liquids in experiments involving a pulse of tension (‘negative pressure’) created by the reflection of a pressure pulse at a... Read More about Cavitation and the tensile strength of liquids under dynamic stressing.

Rheology of multigrade engine oils in high deformation rate extensional flows (2004)
Journal Article
Barrow, M. S., Brown, S. W. J., Cordy, S., Williams, P. R., & Williams, R. L. (2004). Rheology of multigrade engine oils in high deformation rate extensional flows. International Journal of Engine Research, 5(4), 349-364. https://doi.org/10.1243/146808704

An experimental study is reported of liquid jets formed by the collapse of bubbles under cavitation-generated pressure waves. The results reveal that jets formed from samples of commercial multigrade engine oils experience an extensional flow which i... Read More about Rheology of multigrade engine oils in high deformation rate extensional flows.

Rheology of Dilute Polymer Solutions and Engine Lubricants in High Deformation Rate Extensional Flows Produced by Bubble Collapse (2004)
Journal Article
Barrow, M. S., Brown, S. W. J., Cordy, S., Williams, P. R., & Williams, R. L. (2004). Rheology of Dilute Polymer Solutions and Engine Lubricants in High Deformation Rate Extensional Flows Produced by Bubble Collapse. Journal of Fluids Engineering, 126(2),

We report a study of liquid jets formed by the collapse of bubbles under cavitationgenerated pressure waves. Such jets involve an extensional flow which is characterized by high rates of extension, the latter being relevant to considerations of the f... Read More about Rheology of Dilute Polymer Solutions and Engine Lubricants in High Deformation Rate Extensional Flows Produced by Bubble Collapse.