Large-Eddy Simulation of Stratified Turbulence. Part I: A Vortex-Based Subgrid-Scale Model

• Published in: Journal of the atmospheric sciences Vol. 71; no. 5; pp. 1863 - 1879
• Main Authors: Chung, Daniel, Matheou, Georgios
• Format: Journal Article
• Language: English
• Published: Boston American Meteorological Society 01.05.2014
• Subjects: Atmospheric boundary layer; Buoyancy; Computational fluid dynamics; Convection; Dynamics; Energy; Fluid flow; High Reynolds number; Kinetic energy; Large eddy simulation; Large eddy simulations; Meteorology; Modelling; Numerical analysis; Obukhov length; Oceanic eddies; Reynolds number; Scale models; Scaling; Similarity theory; Simulation; Stratification; Subgrid scale models; Turbulence; Turbulent flow; Velocity; Vertical mixing; Viscosity; Vortices; Yield forecasting

The stretched-vortex subgrid-scale (SGS) model is extended to enable large-eddy simulation of buoyancy-stratified turbulence. Both stable and unstable stratifications are considered. The extended model retains the anisotropic form of the original stretched-vortex model, but the SGS kinetic energy an...