2017/12/08 by Sumit Vashishtha, A. Chatterjee, Vashishtha, Sumit +5
Engineering · Physics and Astronomy · #76F05 (Secondary) #76F65 (Primary) 76F30 #FOS: Physical sciences #Fluid Dynamics (physics.flu-dyn) #Fluid Dynamics and Turbulent Flows #Lattice Boltzmann Simulation Studies #Solar and Space Plasma Dynamics
paper · pdf · doi:10.48550/arxiv.1712.03170
openalex publication_date 2017/12/08 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
In this paper, we have used renormalized viscosity for performing large eddy simulations (LES) of decaying homogeneous and isotropic turbulence inside a periodic cube on coarse grids (323, 643 and 1283) at initial Taylor Reynolds number Reλ ≈ 315 . The LES results were compared with direct numerical simulation (DNS) results on 5123 grid. We observe good agreement between LES and DNS results on the temporal evolution of turbulence kinetic energy E(t), kinetic energy spectrum Eu(k), kinetic energy flux Πu(k). The isosurfaces of velocity magnitude at a given time are similar for DNS and LES. This establishes the suitability of using renormalized viscosity for performing large eddy simulations.