Convective Heat Transfer from the Wall Surface of a Cavity to the External Stream : Effects of Temperature Nonuniformity on the Wall Surface for Correlations of Heat Transfer Model

Convective heat transfer from the wall surface of a cavity to the external stream is experimentally studied in the Reynolds number range from 10000 to 100000. Temperature distribution of the fluid in the cavity is almost uniform, except in the thin region immediately adjacent to the wall surface of the cavity. The temperature of the fluid in the cavity is represented by the average temperature of the fluid in the cavity. Namely, convective heat transfer from the wall surface of the cavity to the external stream is treated with the heat transfer model comprising the following two phenomena : one is the heat transfer from the wall surface to the fluid in the cavity, and the other is the heat transfer from the fluid in the cavity to the external stream. The vertical wall surface temperature of the cavity decreases from the bottom to the opening of the cavity. The effects of temperature nonuniformity on the wall surface of the cavity for convective heat transfer are also reported.