In the wake of a rectangular cylinder measurements of mean velocity and some turbulent stresses are carried out in a straight duct and in a curved duct. The difference in turbulent quantities in the wake of the body, in the straight duct an in the curved duct is significant especially in the downstream side of the wake. The shear stresses are more sensitive to curvature than the normal stresses.
Measurements of mean velucity and turbulent stresses are carried out in the wake of an airfoil, in a straight duct and in two curved ducts. A comparison is made on the variation of turbulent shear stress in the wakes of bluff bodies and that of an airfoil in curved and straight ducts. The turbulent shear stress is increased on one side of the curved wake centre-line compared to that of the straight wake and on the other side it is reduced. It is found that the turbulent shear stress is more sensi tive to curvature than the normal stresses.
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