An experimental study of convective heat transfer in a liquid-filled vertical annulus of radius ratio 5. 338 has been conducted for the height-to-gap width ratios of 0. 5, 1 and 1. 5. With water, heptane and ethylene glycol as the test fluids, a Rayleigh number range of 8 multiplied by 10**6 less than Ra less than 3 multiplied by 10**1**0, and a Prandtl number range of 4 less than Pr less than 196 have been covered. Curvature effects on the temperature field are significant and result in a lower effective sink temperature for the boundary layer on the isothermally heated inner wall.
|Original language||English (US)|
|Number of pages||12|
|Journal||American Society of Mechanical Engineers, Heat Transfer Division, (Publication) HTD|
|State||Published - Dec 1 1984|