Local heat transfer around a wall-mounted cube in the turbulent boundary layer

Experimental studies were performed to investigate the fluid flow and local heat transfer around a cube mounted on a wall of a plane. The Reynolds number based on the cube height ranged from 4.2×103 to 3.3×104. The turbulent boundary layer thickness δ was 1.5–1.83 times higher than the cube height d. Surface temperatures on the cube and the base wall were measured directly with numerous thermocouples under the condition of constant heat flux. In the present paper, local heat transfer characteristics on the cube and the base wall were clarified correlating to the flow characteristics. In the range of the present Reynolds number, the overall Nusselt number of the cube can be expressed by Num=0.137 Re0.68.