Can I read Influence of power-law index on transitional Reynolds numbers for flow over a semi-circular cylinder on EtoBox?

Influence of power-law index on transitional Reynolds numbers for flow over a semi-circular cylinder by Avinash Chandra; R.P. Chhabra is a Engineering article available to read on EtoBox.

What is Influence of power-law index on transitional Reynolds numbers for flow over a semi-circular cylinder about?

In this work, the governing partial differential equations (continuity and Cauchy's momentum equations) describing the flow of power-law type non-Newtonian fluids across a semicircular cylinder (oriented with its curved surface in the upstream direction) have been solved numerically. In particular, consideration has been given to the delineation of the critical Reynolds numbers denoting the onset of flow separation from the surface of the cylinder and the onset of the laminar vortex shedding regime. This information is germane to establish the scaling of the macroscopic characteristics like drag coefficient and Strouhal number on the governing parameters, namely, Reynolds number and power-law index. The present results clearly suggest that the transitional Reynolds numbers show a strong dependence on the type (shear-thinning and shear-thickening) of fluid behavior as well as on the severity of the shear-dependence of the viscosity. With reference to the behavior seen in Newtonian fluids, the flow remains not only attached to the surface up to higher Reynolds numbers, but shear-thinning behavior also delays the onset of the laminar vortex shedding regime. As expected, shear-thickeni

Who reads Influence of power-law index on transitional Reynolds numbers for flow over a semi-circular cylinder?

Author

Avinash Chandra; R.P. Chhabra

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0307-904X)

Published

2011

Language

EN

Field

Engineering (Physical Sciences)