SPECTRA IN HELICAL 3-DIMENSIONAL HOMOGENEOUS ISOTROPIC TURBULENCE

Three-dimensional homogeneous isotropic turbulence with helicity is st udied numerically at high Reynolds number. Helicity is generated by a large-scale white-in-time helical force. High Reynolds number is achie ved by using hyperviscous dissipation It is shown that a cascade of he licity from large to small scales develops. The scalings of the energy and helicity spectra are consistent with Kolmogorov inertial range sc aling predictions. No inverse cascade of helicity is observed.