Exact coherent structures in an asymptotically reduced description of parallel shear flows
نویسندگان
چکیده
منابع مشابه
Reduced description of exact coherent states in parallel shear flows.
A reduced description of exact coherent structures in the transition regime of plane parallel shear flows is developed, based on the Reynolds number scaling of streamwise-averaged (mean) and streamwise-varying (fluctuation) velocities observed in numerical simulations. The resulting system is characterized by an effective unit Reynolds number mean equation coupled to linear equations for the fl...
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Exact coherent structures are three-dimensional, nonlinear traveling wave solutions of the Navier-Stokes equations. These solutions are typically unstable from onset, yet they capture the basic statistical and structural features of low Reynolds number turbulent shear flows remarkably well. These exact coherent structures have now been found in all canonical shear flows: plane Couette, Poiseuil...
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ژورنال
عنوان ژورنال: Fluid Dynamics Research
سال: 2014
ISSN: 0169-5983,1873-7005
DOI: 10.1088/0169-5983/47/1/015504