The artificial compressibility method is used to analyze internal flows in
rotating ducts having strong curvature. This study was concerned with the l
aminar flow of an incompressible Newtonian fluid having constant viscosity
in circular and square ducts with a 90 degrees bend The emphasis of the pre
sent simulation is to determine the effect of rotation and through-flow rat
e on the fluid Physics and friction characteristics in the straight channel
and in the curved geometric regions The Reynolds numbers ranged from 100 t
o 790 and the Rossby numbers from 0 to 0.4. Coriolis forces arising from ro
tation Produce a non-symmetric secondary flow in the bend that increases th
e loss coefficient as compared with the values for non-rotation. rn additio
n, the wall friction losses in the straight outlet section are increased, a
nd both effects are directly proportional to the Rossby number.