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Communication Dans Un Congrès Année : 2018

Exact invariant solutions in the near-wall region of boundary layer turbulence

Résumé

In boundary layer flows, small-scale streaky structures with a typical spacing of roughly one hundred wall units dominate the dynamics close the wall, where they control dissipation and wall drag. We investigate near-wall exact invariant solutions of the Navier-Stokes equations which may underly the characteristic near-wall streaks. Invariant solutions for asymptotic suction boundary layer flow (ASBL) are constructed in a minimal flow unit using small-scale filtering approaches. These solutions are a step towards extending the emerging dynamical systems view of turbulence to the near-wall region of boundary layer flows.
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Dates et versions

hal-02868875 , version 1 (15-06-2020)

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  • HAL Id : hal-02868875 , version 1

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Sajjad Azimi, Carlo Cossu, Tobias M Schneider. Exact invariant solutions in the near-wall region of boundary layer turbulence. APS March Meeting, American Physical Society (APS), Mar 2018, Los Angeles (CA), United States. ⟨hal-02868875⟩
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