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Fluids 2017, 2(1), 5; doi:10.3390/fluids2010005

A Note on the Drag Coefficient of Steady Flow of Non-Newtonian, Power-Law Fluids across Unbounded Two-Dimensional Bodies at Low Reynolds Numbers

School of Engineering, Democritus University of Thrace, 67100 Xanthi, Greece
Academic Editor: Mehrdad Massoudi
Received: 12 December 2016 / Revised: 20 January 2017 / Accepted: 25 January 2017 / Published: 27 January 2017
View Full-Text   |   Download PDF [1682 KB, uploaded 27 January 2017]   |  

Abstract

The flow of a non-Newtonian, power-law fluid, directed normally to long, two-dimensional horizontal bodies, is considered in the present note. It is found that for low Reynolds numbers ( Re 0.1 ) and a low power-law index (shear-thinning fluids) the drag coefficient always obeys the relationship c D = A / Re , whereas at a high power-law index (shear-thickening fluids) the drag coefficient tends to become identical for all bodies irrespective of their cross-section form. View Full-Text
Keywords: cylindrical body; non-Newtonian; power-law; drag cylindrical body; non-Newtonian; power-law; drag
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Pantokratoras, A. A Note on the Drag Coefficient of Steady Flow of Non-Newtonian, Power-Law Fluids across Unbounded Two-Dimensional Bodies at Low Reynolds Numbers. Fluids 2017, 2, 5.

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