Critical shear stress for incipient motion of non‐cohesive particles in open‐channel flows of pseudoplastic fluids. (3rd May 2016)

• Record Type: Journal Article
• Authors: Tamburrino, Aldo; Carrillo, Daniela; Negrete, Felipe; Ihle, Christian F.
• Is Part Of: Canadian journal of chemical engineering. Volume 94:Number 6(2016)
• Page Start: 1084
• Page End: 1091
• Publication Date: 2016-05-03
• Subjects: incipient motion -- Shields stress -- critical shear stress -- pseudoplastic fluid; Chemical engineering -- Periodicals; Technology -- Periodicals; 660.05
• DOI: 10.1002/cjce.22498
• Languages: English
• ISSNs: 0008-4034

Abstract

Abstract: The results of a theoretical and experimental study on the conditions of incipient motion of non‐cohesive solid particles in laminar flows of pseudoplastic fluids are presented in the article. It is concluded that, for practical purposes, using a modified particle Reynolds number that includes the consistency coefficient and the flow index, the motion threshold condition is well defined by the Shields diagram, with a slight modification to that presented by Mantz for low Reynolds numbers. The range of particle Reynolds numbers covered in the study was from 0.026–12.56.