A novel analytical method predicts plug boundaries of Bingham plastic fluids for laminar flow through annulus

In Bingham plastic fluids, a central pre-yield or plug region exists in the middle of the concentric annular flow. In this region, the local shear stress is less than the dynamic yield stress, so the plug behaves like a rigid solid. This is the main feature that distinguishes the flow of a Bingham p...

Full description

Bibliographic Details
Main Authors: Bahadori, Alireza (Author), Zahedi, Gholamreza (Author), Zendehboudi, Sohrab (Author)
Format: Article
Language:English
Published: John Wiley & Sons, Inc., 2013.
Subjects:
Online Access:Get fulltext
LEADER 01382 am a22001573u 4500
001 46503
042 |a dc 
100 1 0 |a Bahadori, Alireza  |e author 
700 1 0 |a Zahedi, Gholamreza  |e author 
700 1 0 |a Zendehboudi, Sohrab  |e author 
245 0 0 |a A novel analytical method predicts plug boundaries of Bingham plastic fluids for laminar flow through annulus 
260 |b John Wiley & Sons, Inc.,   |c 2013. 
856 |z Get fulltext  |u http://eprints.utm.my/id/eprint/46503/1/GholamrezaZahedi2013_ANovelAnalyticalMethodPredictsPlug.pdf 
520 |a In Bingham plastic fluids, a central pre-yield or plug region exists in the middle of the concentric annular flow. In this region, the local shear stress is less than the dynamic yield stress, so the plug behaves like a rigid solid. This is the main feature that distinguishes the flow of a Bingham plastic fluid from that of a power law fluid. In this work, a simple-to-use correlation is developed to predict the boundaries of the plug of Bingham plastic fluids for laminar flow through annulus as a function of dimensionless yield stress and aspect ratio parameters for given values of the rheological constants, pressure gradient and the dimensions of the annulus. The results are found to be in excellent agreement with reported data in the literature with an average absolute deviation of less than 1.7%. 
546 |a en 
650 0 4 |a TP Chemical technology