Fluid Flow and Heat Transfer in a Parallel Plate Duct Containing a Cylinder

As an augmentative means of forced convective heat transfer, a cylinder was inserted in a parallel plate duct and the resultant local heat transfer coeffidient on the duct wall at R/L=0.4∼0.8(R : radius of cylinder, L : a half width of duct) was measured. It was clarified how heat transfer corresponded to the fluid flow behind the cylinder and near the wall and some consideration on the mechanism of augmentation in heat transfer was made. Experimental correlation has been obtained which makes it possible to calculate the local heat transfer variation in all the flow regions both upstfeam and downstream of the maximum heat transfer position for various R/L.