## Contributions

Follow the blue link(s) below for abstracts and full text pdfs .

matching >Leong.Y<

Author index ►Y. Leong.Yeow, Yee-Kwong Leong, Ash Khan

Most cited recent articles ►

Articles for free download ►

Search conferences ►

Error Introduced by a Popular Melthod of Processing Parallel-Disk Viscometry Data

Appl. Rheol.17:6 (2007) 66415 (6 pages) ►

The assumptions implicit in the simplified expressions used to convert the torque-rotational speed data of parallel-disk viscometry into rim shear rate and rim shear stress are identified. The rim shear stress generated by the simplified expression is compared against the actual rim shear stress. The error involved is quantified for two standard rheological models and for a set of laboratory data. Under normal operation conditions of parallel-disk viscometers this error was found to be within the acceptable limit. However, for highly shear thinning fluids and for fluids exhibiting yield stress this error can become very large. The suitability of the approximate rim shear stress in wall slip determination is then briefly discussed.► Cite this publication as follows:

LeongYeow Y, Leong Y, Khan A: Error Introduced by a Popular Melthod of Processing Parallel-Disk Viscometry Data, Appl. Rheol. 17 (2007) 66415.

© Applied Rheology 2019