Letter to the Editor: On the evolution of dissipation rate and resolved kinetic energy in ALDM simulations of the Taylor–Green flow

✍ Scribed by Stefan Hickel; Nikolaus A. Adams; J. Andrzej Domaradzki

• Publisher: Elsevier Science
• Year: 2010
• Tongue: English
• Weight: 196 KB
• Volume: 229
• Category: Article
• ISSN: 0021-9991
• DOI: 10.1016/j.jcp.2009.11.017

✦ Synopsis

In order to validate implementations of the dynamic Smagorinsky model and the multi-scale Smagorinsky model, Fauconnier et al. [1] conducted pseudo-spectral large-eddy simulations (LES) of a transitional Taylor-Green vortex and compared the evolution of dissipation and resolved turbulent kinetic energy with data for the Adaptive Local Deconvolution Method (ALDM) taken from Ref. [2]. Fauconnier et al. came to the conclusion that the three methods lead to modeling errors with similar magnitudes but opposite signs, which gives an erroneous impression about the implicit subgrid-scale modeling Fig. 1. Temporal decay of resolved turbulent kinetic energy kr (left) and percentage of resolved turbulent kinetic energy Dkr ¼ kr =kexact (right) for Taylor-Green flow;