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11 papers · 2 filters
Emergence of universal scaling in isotropic turbulence
Sualeh Khurshid, Diego Donzis, Katepalli R. Sreenivasan
Universal properties of turbulence have been associated traditionally with very high Reynolds numbers, but recent work has shown that the onset of the power-laws in derivative stat…
Lagrangian acceleration in fully developed turbulence and its Eulerian decompositions
Dhawal Buaria, Katepalli R. Sreenivasan
We study the properties of various Eulerian contributions to fluid particle acceleration by using well-resolved direct numerical simulations of isotropic turbulence, with the grid…
Similarities between characteristics of convective turbulence in confined and extended domains
Ambrish Pandey, Dmitry Krasnov, Jörg Schumacher +2
To understand turbulent convection at very high Rayleigh numbers typical of natural phenomena, computational studies in slender cells are an option if the needed resources have to…
Asymmetry of velocity increments in turbulence
Katepalli R. Sreenivasan, Kartik P. Iyer, Ashvin Vinodh
We use well-resolved direct numerical simulations of high-Reynolds-number turbulence to study a fundamental statistical property of turbulence -- the asymmetry of velocity incremen…
Triadic resonant instability in confined and unconfined axisymmetric geometries
Samuel Boury, Paco Maurer, Sylvain Joubaud +2
We present an investigation of the resonance conditions of axisymmetric internal wave sub-harmonics in confined and unconfined domains. In both cases, sub-harmonics can be spontane…
Weakly nonlinear analysis of pattern formation in active suspensions
Laurel Ohm, Michael J. Shelley
We consider the Saintillan--Shelley kinetic model of active rodlike particles in Stokes flow (Saintillan & Shelley 2008a,b), for which the uniform, isotropic suspension of pusher p…