ON THE SIMULATION OF TURBULENT-FLOW PAST BLUFF-BODIES

The paper reviews calculations performed to-date of vortex-shedding fl ow past long cylinders at high Reynolds numbers where the effect of st ochastic turbulent fluctuations superimposed on the 2D periodic sheddi ng motion needs to be simulated. The experiences gathered with various statistical turbulence models ranging from algebraic eddy-visocity mo dels to Reynolds-stress-equation models are summarised and discussed, and calculations of vortex-shedding flow past cylinders of various cro ss-sections are presented. These calculations are confronted with larg e-eddy simulations whenever possible, and a comparative discussion on the various calculation methods is given.