Heat transfer from a finite circular cylinder on the flat plate

Measurements of the local mass transfer coefficient on all surfaces of a finite circular cylinder, including a free end, have been made taking into account the relation of the flow field to the surface in the case of comparatively small slenderness 1/d = about 6. The effect of the turbulent boundary layer thickness on the local heat transfer characteristics are examined at smaller slendernesses such as 1/d = 1. It is found that the average heat transfer coefficient around the side wall of a finite cylinder is lower than that of a two-dimensional cylinder except in the case of 1/d = 1, and that the difference increases with increasing 1/d. The average heat transfer coefficient on the free end of the cylinder takes a higher value than that of a two-dimensional cylinder. The increment depends on the boundary layer thickness for a small 1/d, and becomes smaller with increasing 1/d.