Spontaneous suppression of inverse energy cascade in instability-driven 2-D turbulence
Spontaneous suppression of inverse energy cascade in instability-driven 2-D turbulence
Instabilities of fluid flows often generate turbulence. Using extensive direct numerical simulations, we study two-dimensional turbulence driven by a wavenumber-localised instability superposed on stochastic forcing, in contrast to previous studies of state-independent forcing. As the contribution of the instability forcing, measured by a parameter $\gamma$ , increases, the system undergoes …