Falling Sphere Viscometry. II. End Effects in Short Tubes
作者:
J. Lloyd Sutterby,
期刊:
Transactions of the Society of Rheology
(AIP Available online 1973)
卷期:
Volume 17,
issue 4
页码: 575-585
ISSN:0148-6055
年代: 1973
DOI:10.1122/1.549309
出版商: The Society of Rheology
数据来源: AIP
摘要:
Stokes' law for determining viscosity from sphere fall velocity applies in the absence of wall, inertial, and end effects. One objective of this investigation was to establish a criterion for choosing a tube long enough to avoid end effects. The resulting criterion is as follows. ForL/D=2andd/D<0.125there are no observable end effects throughout the middle third of the fall tube, even for Re as large as 2. Another objective was to establish a correlation of simultaneous wall and end corrections to Stokes' law in the absence of inertial effects, for application in short tube viscometry. The desired correlation is presented in Figure 3 and Table I.
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