Travelling-wave solutions are shown to bifurcate from relative periodic orbits in plane Poiseuille flow at in a saddle-node infinite-period bifurcation. These solutions consist in self-sustaining sinuous quasi-streamwise streaks and quasi-streamwise vortices located in the bulk of the flow. The lower branch travelling-wave solutions evolve into spanwise localized states when the spanwise size of the domain in which they are computed is increased. On the contrary, the upper branch of travelling-wave solutions develops multiple streaks when is increased. Upper-branch travelling-wave solutions can be continued into coherent solutions to the filtered equations used in large-eddy simulations where they represent turbulent coherent large-scale motions.
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Subhandu Rawat 1; Carlo Cossu 1; François Rincon 2, 3
@article{CRMECA_2016__344_6_448_0, author = {Subhandu Rawat and Carlo Cossu and Fran\c{c}ois Rincon}, title = {Travelling-wave solutions bifurcating from relative periodic orbits in plane {Poiseuille} flow}, journal = {Comptes Rendus. M\'ecanique}, pages = {448--455}, publisher = {Elsevier}, volume = {344}, number = {6}, year = {2016}, doi = {10.1016/j.crme.2015.12.005}, language = {en}, }
TY - JOUR AU - Subhandu Rawat AU - Carlo Cossu AU - François Rincon TI - Travelling-wave solutions bifurcating from relative periodic orbits in plane Poiseuille flow JO - Comptes Rendus. Mécanique PY - 2016 SP - 448 EP - 455 VL - 344 IS - 6 PB - Elsevier DO - 10.1016/j.crme.2015.12.005 LA - en ID - CRMECA_2016__344_6_448_0 ER -
%0 Journal Article %A Subhandu Rawat %A Carlo Cossu %A François Rincon %T Travelling-wave solutions bifurcating from relative periodic orbits in plane Poiseuille flow %J Comptes Rendus. Mécanique %D 2016 %P 448-455 %V 344 %N 6 %I Elsevier %R 10.1016/j.crme.2015.12.005 %G en %F CRMECA_2016__344_6_448_0
Subhandu Rawat; Carlo Cossu; François Rincon. Travelling-wave solutions bifurcating from relative periodic orbits in plane Poiseuille flow. Comptes Rendus. Mécanique, Volume 344 (2016) no. 6, pp. 448-455. doi : 10.1016/j.crme.2015.12.005. https://comptes-rendus.academie-sciences.fr/mecanique/articles/10.1016/j.crme.2015.12.005/
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