title: Real-space manifestations of bottlenecks in turbulence spectra.
abstract: An energy-spectrum bottleneck, a bump in the turbulence spectrum between the inertial and dissipation ranges, is shown to occur in the nonturbulent, one-dimensional, hyperviscous Burgers equation and found to be the Fourier-space signature of oscillations in the real-space velocity, which are explained by boundary-layer-expansion techniques. Pseudospectral simulations are used to show that such oscillations occur in velocity correlation functions in one- and three-dimensional hyperviscous hydrodynamical equations that display genuine turbulence.
authors: Laboratoire Lagrange, OCA, UNS, CNRS, BP 4229, 06304 Nice Cedex 4, France.
authors: Uriel
authors: U
authors: Frisch
authors: Samriddhi Sankar
authors: SS
authors: Ray
authors: Ganapati
authors: G
authors: Sahoo
authors: Debarghya
authors: D
authors: Banerjee
authors: Rahul
authors: R
authors: Pandit