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Transport Phenomena in Thermal Engineering. Volume 2

ISBN:
1-56700-015-0 (Print)

INTER-LABORATORY MEASUREMENTS OF THE VISCOUS PROPERTIES OF NEWTONIAN AND NON-NEWTONIAN FLUIDS WITH THE FALLING NEEDLE VISCOMETER

F. Anwari
Coatings Research Group, Inc., Cleveland, OH, USA

S. Choi
Argonne National Laboratory, Argonne, IL, USA

Young I. Cho
Department of Mechanical Engineering and Mechanics, Drexel University, Philadelphia, USA

J. Hartnett
University of Illinois at Chicago, Chicago, IL, USA

T. Irvine
University of Illinois at Chicago, Chicago, IL, USA

N. Park
Stony Brook Scientific, Ltd., Norristown, PA, USA

Abstract

Six Laboratories performed independent measurements of the viscous properties of Newtonian and Non-Newtonian Fluids using Falling Needle Viscometers. University, Governmental and Industrial laboratories were represented. Although the fluid samples measured by all the laboratories were identical, no investigator knew the property values in advance.
Each investigator made measurements on three Standard Newtonian fluids and three paint products which were pseudoplastic non-Newtonian fluids.
Results are presented showing that the Newtonian viscosity measurements agreed within ±1% with the standard values and the non-Newtonian flow curves within ± 10%.