Direct numerical simulation and implicit large eddy simulation of stratified turbulence

Conference paper (2012)

Authors

Sebastian Remmler Technische Universität München
S. Hickel Technische Universität München
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Published Date

01-12-2012

Language

English

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Abstract

Simulation of geophysical turbulent flows requires a robust and accurate subgrid-scale turbulence modeling. We propose an implicit subgrid-scale model for stratified fluids, based on the Adaptive Local Deconvolution Method. To validate this turbulence model, we performed direct numerical simulations of the transition of the three-dimensional Taylor-Green vortex and homogeneous stratified turbulence. Our analysis proves that the implicit turbulence model correctly predicts the turbulence energy budget and the spectral structure of stratified turbulence.