Searching for just a few words should be enough to get started. If you need to make more complex queries, use the tips below to guide you.
Article type: Research Article
Authors: Benis, A.M. | Usami, S. | Chien, S.
Affiliations: Laboratory of Hemorheology, Department of Physiology, Columbia University, College of Physicians and Surgeons, New York, N.Y. 10032, U.S.A.
Abstract: Determination with a Couette viscometer of the shear stress-shear rate relation for a non-Newtonian fluid is not simple because of the variation of shear rate within the viscometer gap. Exact methods for calculation of the shear rate have been presented by Krieger and Elrod, but they require extensive manipulation of the viscometric data. The present study shows that use of average values of shear stress and shear rate allows determination of the viscometric curve to within a few per cent of the exact relation. The error is found to remain finite even for extreme deviation from Newtonian behavior. For a pseudo plastic power-law fluid the maximum per cent error in calculated viscosity at a given shear rate is given by [(s−1)/2s]×100, where s is the ratio of the outer to inner cylinder diameters. The method has the advantage that the average shear rates used do not depend on the fluid rheology and thus can be selected in advance.
DOI: 10.3233/BIR-1971-8201
Journal: Biorheology, vol. 8, no. 2, pp. 65-69, 1971
IOS Press, Inc.
6751 Tepper Drive
Clifton, VA 20124
USA
Tel: +1 703 830 6300
Fax: +1 703 830 2300
sales@iospress.com
For editorial issues, like the status of your submitted paper or proposals, write to editorial@iospress.nl
IOS Press
Nieuwe Hemweg 6B
1013 BG Amsterdam
The Netherlands
Tel: +31 20 688 3355
Fax: +31 20 687 0091
info@iospress.nl
For editorial issues, permissions, book requests, submissions and proceedings, contact the Amsterdam office info@iospress.nl
Inspirees International (China Office)
Ciyunsi Beili 207(CapitaLand), Bld 1, 7-901
100025, Beijing
China
Free service line: 400 661 8717
Fax: +86 10 8446 7947
china@iospress.cn
For editorial issues, like the status of your submitted paper or proposals, write to editorial@iospress.nl
如果您在出版方面需要帮助或有任何建, 件至: editorial@iospress.nl