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Large-eddy simulation of flow over a circular cylinder in the sub-critical regime

W. Cheng
Mechanical Engineering, Physical Sciences and Engineering Division King Abdullah University of Science and Technology Thuwal, Saudi Arabia

D. I. Pullin
Graduate Aerospace Laboratories California Institute of Technology 1200 E. California Blvd. Pasadena CA 91125

Ravi Samtaney
Mechanical Engineering, Physical Sciences and Engineering Division King Abdullah University of Science and Technology Thuwal, Saudi Arabia

Sinopsis

We present wall-resolved, large-eddy simulation (LES) of flow over a circular cylinder up to ReD = 105, based on the cylinder diameter D, in the subcritical regime. The numerical method is a fully centered-finite-difference scheme on a standard curvilinear O-grid. The stretched-vortex sub-grid scale model is used in the whole domain, including regions of large-scale separated flow. Both secondand fourth-order accurate schemes are used separately, and results, specifically the skin-friction coefficient along the cylinder surface and its variation with ReD, are compared with literature data.