Pipe Flow Measurements of a Transparent Non-Newtonian Slurry

[+] Author and Article Information
J. T. Park, R. J. Mannheimer, T. A. Grimley, T. B. Morrow

Southwest Research Institute, San Antonio, Texas 78228-0510

J. Fluids Eng 111(3), 331-336 (Sep 01, 1989) (6 pages) doi:10.1115/1.3243648 History: Received January 04, 1989; Online October 26, 2009


An experimental description of the flow structure of non-Newtonian slurries in the laminar, transitional, and full turbulent pipe flow regimes is the primary objective of this research. Experiments were conducted in a large-scale pipe slurry flow facility with an inside pipe diameter of 51 mm. The transparent slurry formulated for these experiments from silica, mineral oil, and Stoddard solvent exhibited a yield-power-law behavior from concentric-cylinder viscometer measurements. The velocity profile for laminar flow from laser Doppler velocimeter (LDV) measurements had a central plug flow region, and it was in agreement with theory. The range of the transition region was narrower than that for a Newtonian fluid. The mean velocity profile for turbulent flow was close to a 1/7 power-law velocity profile. The rms longitudinal velocity profile was also similar to a classical turbulent pipe flow experiment for a Newtonian fluid; however, the rms tangential velocity profile was significantly different.

Copyright © 1989 by ASME
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