LASER-DOPPLER MEASUREMENTS OF FLOW IN A CONE-AND-PLATE RHEOMETER AND THE EFFECT OF CONE MISALIGNMENT

Authors
DUDGEON DJ WEDGEWOOD LE
Citation
Dj. Dudgeon et Le. Wedgewood, LASER-DOPPLER MEASUREMENTS OF FLOW IN A CONE-AND-PLATE RHEOMETER AND THE EFFECT OF CONE MISALIGNMENT, Rheologica Acta, 36(1), 1997, pp. 28-37
Citations number
18
Categorie Soggetti
Mechanics
Journal title
Rheologica Acta → ACNP
ISSN journal
00354511
Volume
36
Issue
1
Year of publication
1997
Pages
28 - 37
Database
ISI
SICI code
0035-4511(1997)36:1<28:LMOFIA>2.0.ZU;2-Y
Abstract
Laser Doppler velocimetry (LDV) is used to measure the flow profile of a Newtonian fluid in a cone-and-plate rheometer. The primary and seco ndary flow patterns are measured in the ideal geometry. The results co nfirm prior predictions of flow patterns. Flow profiles are also measu red in the misaligned geometry in which the cone axis of rotation is t ilted slightly off the perpendicular with the plate surface. Numerical predictions of these flow patterns (Dudgeon and Wedgewood, 1994) are also confirmed.