We aim to design subgrid-scale models for large-eddy simulation of rotating turbulent flows.
Rotating turbulent flows form a challenging test case for eddy viscosity models due to the
presence of the conservative Coriolis force. We therefore propose a new subgrid-scale
model that, in addition to a dissipative eddy viscosity term, contains a nondissipative
nonlinear model term that can capture transport processes, such as those due to rotation.
We show that the addition of this nonlinear model term leads to improved predictions of the …

Rotating turbulent flows form a challenging test case for large-eddy simulation (LES). We,
therefore, propose and validate a new subgrid-scale (SGS) model for such flows. The
proposed SGS model consists of a dissipative eddy viscosity term as well as a
nondissipative term that is nonlinear in the rate-of-strain and rate-of-rotation tensors. The two
corresponding model coefficients are a function of the vortex stretching magnitude.
Therefore, the model is consistent with many physical and mathematical properties of the …