We discuss large-eddy simulations (LES) of the incompressible Navier-Stokes equations for Taylor-Couette flow. The ratio of the two co-axial cylinder diameters is η = ri/ro = 0.909 with ri the inner cylinder radius and ro the outer radius. The outer cylinder is stationary while the inner cylinder rotates with constant angular velocity ωi. Subgrid stresses are represented using the stretched-vortex model (SVM) where the subgrid motion is modeled by subgrid vortices undergoing stretching by the local resolved-scale velocity- gradient field. We report wall-resolved LES at Rei = driωi/ν up to Rei = 106 with ν the kinematic viscosity of the Newtonian fluid and d = ro − ri the cylinder gap. The present study focuses on the wall-turbulence behavior at relatively high Rei. Comparisons are made with direct numerical simulations (DNS) and with experimental results.
|Original language||English (US)|
|Title of host publication||11th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 2019|
|Publisher||International Symposium on Turbulence and Shear Flow Phenomena, TSFP|
|State||Published - Jan 1 2019|