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TECHNICAL PAPERS

Rheology of Dilute Polymer Solutions and Engine Lubricants in High Deformation Rate Extensional Flows Produced by Bubble Collapse

[+] Author and Article Information
M. S. Barrow, S. W. J. Brown, S. Cordy, P. R. Williams, R. L. Williams

Center for Complex Fluids Processing, School of Engineering, University of Wales Swansea, Singleton Park, Swansea SA2 8PP UK

J. Fluids Eng 126(2), 162-169 (May 03, 2004) (8 pages) doi:10.1115/1.1667889 History: Received June 03, 2003; Revised October 30, 2003; Online May 03, 2004
Copyright © 2004 by ASME
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References

Figures

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Apparatus and ancillary recording equipment including high-speed camera and pressure recording system
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(a) Cyclic pressure-tension record accompanying cavitation showing initial tension pulse and (b) high-amplitude pressure pulse
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Formation of liquid jet. Four (nonconsecutive) images from a sequence recorded at 2,000 f.p.s in which the tube’s vertical axis appears horizontally. The liquid (a commercial 10W40 multigrade engine oil) is located to the left of the liquid-air interface which appears as the dark vertical band.
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Extension rate as a function of time for Newtonian glycerol/water mixture and 5wppm solution of xanthan gum
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Jet deceleration as a function of time for Newtonian glycerol/water mixture and 5wppm solution of xanthan gum
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Extension rate as a function of time for Newtonian and 15W40 multigrade oils
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Jet deceleration as a function of time for Newtonian and 15W40 multigrade oils
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Extension rate as a function of time for Newtonian and 5W30 multigrade oil
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Jet deceleration as a function of time for Newtonian and 5W30 multigrade oil
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Extension rate as a function of time for Newtonian oil and 10W40 multigrade oils
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Jet deceleration as a function of time for Newtonian oil and 10W40 multigrade oils
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Calculated values of the Trouton ratio for a Newtonian glycerol/water mixture and solutions of xanthan gum. The broken line indicates a Trouton ratio of 3.
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Calculated values of the Trouton ratio for the 15W40 oils and their Newtonian counterpart. The broken line indicates a Trouton ratio of 3.
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Calculated values of the Trouton ratio for the 5W30 oil and its Newtonian counterpart. The broken line indicates a Trouton ratio of 3.
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Calculated values of the Trouton ratio for the 10W40 oils and their Newtonian counterpart. The broken line indicates a Trouton ratio of 3.

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