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Steady flow of a power-law non-Newtonian fluid across an unconfined square cylinder.
- Source :
-
Journal of Applied Mechanics & Technical Physics . Mar2016, Vol. 57 Issue 2, p264-274. 11p. - Publication Year :
- 2016
-
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 ≤ 0.5) obeys the relationship C = A/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. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00218944
- Volume :
- 57
- Issue :
- 2
- Database :
- Academic Search Index
- Journal :
- Journal of Applied Mechanics & Technical Physics
- Publication Type :
- Academic Journal
- Accession number :
- 116396796
- Full Text :
- https://doi.org/10.1134/S0021894416020097