Les Analysis Of Turbulent Flow Past a Square Cylinder Using Various SGS Models

Abstract

The turbulent vortex shedding flow past a two-dimensional square cylinder at Re=2.2×104 (test case LES2) was analyzed by Large Eddy Simulation using various dynamic subgrid-scale (SGS) models [1–5]. The types of SGS model used are as follows: the static type of conventional Smagorinsky model (S model, eqns.(l) and (2) in the Appendix (case 1)); the Dynamic Smagorinsky model (DS model, eqn.(6) in the Appendix (case 2)); the Dynamic Mixed model (DM model, eqn.(10) in the Appendix (case 3)); and the Lagrangian Dynamic Mixed model (LDM model, eqn.(16) in the Appendix (case 4)).KeywordsLarge Eddy SimulationCylinder WallStagger GridSmagorinsky ModelDynamic Smagorinsky ModelThese keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.