Journal of Theoretical
and Applied Mechanics
49, 4, pp. 1217-1232, Warsaw 2011
Numerical simulation of turbulent heat and momentum transport in rotating cavity
The paper gives the results of the Direct Numerical Simulation (DNS ) and Large Eddy simulation (LES) which were performed to investigate the 3D transitional non-isothermal flows within a rotor/stator cavity. A Lagrangean version of the dynamic Smagorinsky eddy viscosity model was used. Computations were performed for the cavity of the aspect ratio $ L=3.0$-5.0, curvature parameters $ R_m=1.8$-5.0, for the Reynolds number Re=(1.0-2.5) 10$^5$ and for different Prandtl numbers. The results were obtained for coupled momentum and thermal transport in the rotor/stator cavity flows. The obtained distributions of the turbulent heat flux tensor components, the Reynolds stress tensor components, the turbulent Prandtl number and other structural parameters coincide with the experimental data (published in the literature).
Keywords: laminar-turbulent transition; rotating cavities; LES; DNS