A branch of relative periodic orbits is found in plane Poiseuille flow in a periodic domain at Reynolds numbers ranging from to . These solutions consist in sinuous quasi-streamwise streaks periodically forced by quasi-streamwise vortices in a self-sustained process. The streaks and the vortices are located in the bulk of the flow. Only the amplitude, but not the shape, of the averaged velocity components does change as the Reynolds number is increased from 3000 to 5000. We conjecture that these solutions could therefore be related to large- and very large-scale structures observed in the bulk of fully developed turbulent channel flows.
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Subhendu Rawat 1; Carlo Cossu 1; François Rincon 2, 3
@article{CRMECA_2014__342_8_485_0, author = {Subhendu Rawat and Carlo Cossu and Fran\c{c}ois Rincon}, title = {Relative periodic orbits in plane {Poiseuille} flow}, journal = {Comptes Rendus. M\'ecanique}, pages = {485--489}, publisher = {Elsevier}, volume = {342}, number = {8}, year = {2014}, doi = {10.1016/j.crme.2014.05.008}, language = {en}, }
Subhendu Rawat; Carlo Cossu; François Rincon. Relative periodic orbits in plane Poiseuille flow. Comptes Rendus. Mécanique, Volume 342 (2014) no. 8, pp. 485-489. doi : 10.1016/j.crme.2014.05.008. https://comptes-rendus.academie-sciences.fr/mecanique/articles/10.1016/j.crme.2014.05.008/
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