A passive control is numerically investigated in this paper to
effectively suppress the vortex shedding from bluff bodies. To
implement the control, thr
ee sinusoidal leading edge
configurations are considered and compared to a straight square
cylinder case. Large Eddy Simulati
on (LES) is used to model the
wall effects, as well as the near wake.
Numerical velocity fluctuations in the near wake compare well
with experimental data. The LES observations provide an accurate
prediction of wake instability and near wake topology, otherwise
not provided experimentally. This advantage can be used for
further investigation of
a thorough understanding and
enhancement of control.
Numerical case studies are presented using the software package
FLUENT
and the observations are pres
ented in the form of design
charts, as well as velocity spectra and near wake flow details.