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7 papers · 2 filters
Intermittency from instanton calculus at the transition to turbulence and fusion rules
Timo Schorlepp, Rainer Grauer
Understanding intermittency of turbulent systems from the underlying differential equations is an outstanding problem in fluid dynamics. Here, in the example of Burgers turbulence…
Traveling waves in a continuum model of schooling swimmers
Anand U. Oza, Eva Kanso, Michael J. Shelley
The complex formations exhibited by schooling fish have long been the object of fascination for biologists and physicists. However, the physical and sensory mechanisms leading to o…
Synthetic Turbulence via an Instanton Gas Approximation
Timo Schorlepp, Katharina Kormann, Jeremiah Lübke +2
Sampling synthetic turbulent fields as a computationally tractable surrogate for direct numerical simulations (DNS) is an important practical problem in various applications, and a…
Turbulence and energy dissipation from wave breaking
Jiarong Wu, Stéphane Popinet, Bertrand Chapron +2
Wave breaking is a critical process in the upper ocean: an energy sink for the surface wave field and a source for turbulence in the ocean surface boundary layer. We apply a novel…
Multiscale circulation in wall-parallel planes of turbulent channel flows
Peng-Yu Duan, Xi Chen, Katepalli R. Sreenivasan
Wall turbulence consists of various sizes of vortical structures that induce flow circulation around a wide range of closed Eulerian loops. Here we investigate the multiscale prope…
Transient and steady convection in two dimensions
Ambrish Pandey, Katepalli R. Sreenivasan
We simulate thermal convection in a two-dimensional square box using the no-slip condition on all boundaries, and isothermal bottom and top walls and adiabatic sidewalls. We choose…