Measurement of extensional viscosity using the falling drop technique. Final report, October 27, 1992--September 27, 1996

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In the falling drop technique, a drop is formed by slowly extruding a liquid downward through a small tube. The drop eventually falls, and fluid adheres to both the tube and the drop, creating a distinct extending fiber. Extensional viscosity may be determined by measuring the dimensions of the fiber as it extends. The flow of fluid in a falling drop has been modeled in order to determine extensional viscosity by measuring the extending fiber. A falling drop rheometer was built, and fiber dimensions were measured using two digital cameras and an image processing system. Extensional viscosity was measured for ... continued below

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9 p.

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Jones, D.K. & Wildman, D.J. February 1, 1998.

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Description

In the falling drop technique, a drop is formed by slowly extruding a liquid downward through a small tube. The drop eventually falls, and fluid adheres to both the tube and the drop, creating a distinct extending fiber. Extensional viscosity may be determined by measuring the dimensions of the fiber as it extends. The flow of fluid in a falling drop has been modeled in order to determine extensional viscosity by measuring the extending fiber. A falling drop rheometer was built, and fiber dimensions were measured using two digital cameras and an image processing system. Extensional viscosity was measured for various solutions of glycerol, xanthan gum, and water. The falling drop technique proved to be an effective extensional rheometer for a range of solution concentrations. 6 refs., 3 figs., 1 tab.

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9 p.

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OSTI as DE98051983

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  • Other Information: PBD: [1998]

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  • Other: DE98051983
  • Report No.: DOE/FETC--98/1061
  • DOI: 10.2172/588560 | External Link
  • Office of Scientific & Technical Information Report Number: 588560
  • Archival Resource Key: ark:/67531/metadc691351

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  • February 1, 1998

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  • Aug. 14, 2015, 8:43 a.m.

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  • Feb. 17, 2017, 5:54 p.m.

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Jones, D.K. & Wildman, D.J. Measurement of extensional viscosity using the falling drop technique. Final report, October 27, 1992--September 27, 1996, report, February 1, 1998; Pittsburgh, Pennsylvania. (digital.library.unt.edu/ark:/67531/metadc691351/: accessed August 23, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.