Hairpin vortex solution in planar couette flow: a tapestry of knotted vortices.
نویسندگان
چکیده
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 found that 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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ورودعنوان ژورنال:
- Physical review letters
دوره 102 11 شماره
صفحات -
تاریخ انتشار 2009