Hairpin Vortex Solution in Planar Couette Flow: A Tapestry of Knotted Vortices | Zendy

Tomoaki Itano | Zendy; Sotos C. Generalis | Zendy

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Hairpin Vortex Solution in Planar Couette Flow: A Tapestry of Knotted Vortices

Author(s) -

Tomoaki Itano,

Sotos C. Generalis

Publication year - 2009

Publication title -

physical review letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.688

H-Index - 673

eISSN - 1079-7114

pISSN - 0031-9007

DOI - 10.1103/physrevlett.102.114501

Subject(s) - vortex , couette flow , turbulence , planar , flow (mathematics) , taylor–couette flow , reynolds number , physics , mechanics , shear flow , classical mechanics , computer science , computer graphics (images)

A numerical continuation method has been carried out seeking solutions for two distinct flow configurations, planar Couette flow (PCF) and laterally heated flow in a vertical slot (LHF). We foundthat the spanwise vortex solution in LHF identifies a new solution in PCF. The vortical structure of our new solution has the shape of a hairpin observed ubiquitously in high-Reynolds-number turbulent flow,and we believe this discovery may provide the paradigm for a hierarchical organization of coherent structures in turbulent shear layers

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