The superposition of Von Karman street and convective cells in a horizontal
plane channel containing a triangular prism and heated from below constitu
te the principal subject of this numerical investigation. The numerical sch
eme is based on the control volume finite element method (CVFEM) adapted to
the standard staggered grid with the SIMPLER algorithm for pressure-veloci
ty coupling and an Alternating Direction Implicit (ADI) scheme for the time
integration. Many standard test flows ale simulated successfully, Results
are obtained for a Grashof number ranging from 0 to 1.5x10(4) at Pr = 0.71
and Re = 100 with constant physical properties. At the outlet of the comput
ational domain a convective boundary condition (CBC) is used Results are pr
esented to shore the effect of development of convective cells on the flow
pattern and on the Strouhal number. Regarding the heat transfer rate, we fo
cus on the effect of the presence of the triangular prism on the heat flux
transferred from the hot wall to the flow.