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Prikladnaya Mekhanika i Tekhnicheskaya Fizika, 2016, Volume 57, Issue 2, Pages 83–95
DOI: https://doi.org/10.15372/PMTF20160209
(Mi pmtf858)
 

This article is cited in 10 scientific papers (total in 10 papers)

Steady flow of a power-law non-Newtonian fluid across an unconfined square cylinder

A. Pantokratoras

Democritus University of Thrace, Xanthi, 67100, Greece
Abstract: A two-dimensional flow of a non-Newtonian power-law fluid directed normally to a horizontal cylinder with a square cross section is considered in the present paper. The problem is investigated numerically with a finite volume method by using the commercial code Ansys Fluent with a very large computational domain so that the flow could be considered unbounded. The investigation covers the power-law index from $0.1$ to $2.0$ and the Reynolds number range from $0.001$ to $45.000$. It is found that the drag coefficient for low Reynolds numbers and low power-law index $(n\le 0.5)$ obeys the relationship $C_D=A/\mathrm{Re}$. An equation for the quantity $A$ as a function of the power-law index is derived. The drag coefficient becomes almost independent of the power-law index at high Reynolds numbers and the wake length changes nonlinearly with the Reynolds number and power-law index.
Keywords: square cylinder, power law, drag coefficient, wake.
Received: 08.10.2013
Revised: 20.01.2014
English version:
Journal of Applied Mechanics and Technical Physics, 2016, Volume 57, Issue 2, Pages 264–274
DOI: https://doi.org/10.1134/S0021894416020097
Bibliographic databases:
Document Type: Article
UDC: 532.54
Language: Russian
Citation: A. Pantokratoras, “Steady flow of a power-law non-Newtonian fluid across an unconfined square cylinder”, Prikl. Mekh. Tekh. Fiz., 57:2 (2016), 83–95; J. Appl. Mech. Tech. Phys., 57:2 (2016), 264–274
Citation in format AMSBIB
\Bibitem{Pan16}
\by A.~Pantokratoras
\paper Steady flow of a power-law non-Newtonian fluid across an unconfined square cylinder
\jour Prikl. Mekh. Tekh. Fiz.
\yr 2016
\vol 57
\issue 2
\pages 83--95
\mathnet{http://mi.mathnet.ru/pmtf858}
\crossref{https://doi.org/10.15372/PMTF20160209}
\elib{https://elibrary.ru/item.asp?id=26040227}
\transl
\jour J. Appl. Mech. Tech. Phys.
\yr 2016
\vol 57
\issue 2
\pages 264--274
\crossref{https://doi.org/10.1134/S0021894416020097}
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  • This publication is cited in the following 10 articles:
    Citing articles in Google Scholar: Russian citations, English citations
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