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Numerical predictions and measurements of Reynolds normal stresses in turbulent pipe flow of polymers

Title
Numerical predictions and measurements of Reynolds normal stresses in turbulent pipe flow of polymers
Type
Article in International Scientific Journal
Year
2006
Authors
Resende, PR
(Author)
Other
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Escudier, MP
(Author)
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Presti, F
(Author)
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F. T. Pinho
(Author)
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Cruz, DOA
(Author)
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Journal
Vol. 27
Pages: 204-219
ISSN: 0142-727X
Publisher: Elsevier
Indexing
Other information
Authenticus ID: P-004-MF8
Abstract (EN): An anisotropic low Reynolds number k-is an element of turbulence model has been developed and its performance compared with experimental data for fully-developed turbulent pipe flow of four different polymer solutions. Although the predictions of friction factor, mean velocity and turbulent kinetic energy show only slight improvements over those of a previous isotropic model [Cruz, D.O.A., Pinho, F.T., Resende, P.R., 2004. Modeling the new stress for improved drag reduction predictions of viscoelastic pipe flow. J. Non-Newt. Fluid Mech. 121, 127-141], the new turbulence model is capable of predicting the enhanced anisotropy of the Reynolds normal stresses that accompanies polymer drag reduction in turbulent flow.
Language: English
Type (Professor's evaluation): Scientific
No. of pages: 16
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