Polymer dynamics in wall turbulent flow
Polymer dynamics in wall turbulent flow
The dynamics of dilute polymer solutions is investigated in wall turbulent flow. A realistic turbulent flow field is obtained by a fully coupled direct numerical simulation of a drag-reducing polymer solution. This flow field is used to compare the microscopic and macroscopic description of the polymer dynamics. It is observed that polymers become highly oriented parallel to the mean flow direction. The stretching of the polymers is characterized by a broad distribution of polymer extensions. Finally, the Gaussian manifold corresponding to the macroscopic description of the polymer dynamics is found to be unstable in the present flow
616-622
Ilg, P.
d373331e-d3b5-4831-abdc-fb1597ac1bbe
De Angelis, E.
765a279b-1cef-4612-bb9f-98bdb4b60b38
Karlin, I.V.
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Casciola, C.M.
a8811aea-a654-4463-beae-dfcea7702e48
Succi, S.
159d4d9f-4607-4485-8fca-4d7ad11db6f4
May 2002
Ilg, P.
d373331e-d3b5-4831-abdc-fb1597ac1bbe
De Angelis, E.
765a279b-1cef-4612-bb9f-98bdb4b60b38
Karlin, I.V.
3f0e01a2-c4d9-4210-9ef3-47e6c426cc8a
Casciola, C.M.
a8811aea-a654-4463-beae-dfcea7702e48
Succi, S.
159d4d9f-4607-4485-8fca-4d7ad11db6f4
Ilg, P., De Angelis, E., Karlin, I.V., Casciola, C.M. and Succi, S.
(2002)
Polymer dynamics in wall turbulent flow.
Europhysics Letters, 58 (4), .
(doi:10.1209/epl/i2002-00440-4).
Abstract
The dynamics of dilute polymer solutions is investigated in wall turbulent flow. A realistic turbulent flow field is obtained by a fully coupled direct numerical simulation of a drag-reducing polymer solution. This flow field is used to compare the microscopic and macroscopic description of the polymer dynamics. It is observed that polymers become highly oriented parallel to the mean flow direction. The stretching of the polymers is characterized by a broad distribution of polymer extensions. Finally, the Gaussian manifold corresponding to the macroscopic description of the polymer dynamics is found to be unstable in the present flow
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Published date: May 2002
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Local EPrints ID: 49180
URI: http://eprints.soton.ac.uk/id/eprint/49180
ISSN: 0295-5075
PURE UUID: 651698c9-3e47-4bb8-bddd-32884c3d3ec5
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Date deposited: 26 Oct 2007
Last modified: 15 Mar 2024 09:53
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Author:
P. Ilg
Author:
E. De Angelis
Author:
I.V. Karlin
Author:
C.M. Casciola
Author:
S. Succi
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