Bridging Inertial and Dissipation Range Statistics in Rotating Turbulence
2019
We perform a multifractal analysis of rotating turbulence to obtain an estimate of the (anomalous) scaling exponents in the inertial range in terms of the generalised dimensions associated with the energy dissipation rate. These results are substantiated through direct numerical simulations for different strengths of rotation rate as well as from simulations of a helical shell model. Our work also shows a surprisingly good agreement between the solutions of the Navier-Stokes equations in a rotating frame with those obtained from low-dimensional dynamical systems. In particular, this agreement extends to the structure of the spatial profile of the energy dissipation rates and the decrease in inertial range intermittency with increasing strengths of rotation.
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