ISSN:
1573-8507
Source:
Springer Online Journal Archives 1860-2000
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
,
Physics
Notes:
Abstract The results of an experimental investigation into the temperature profiles and heat transfer associated with natural convection in rectangular air cavities are presented, the angle of inclination varying from 0 (heating at the bottom) to 180° (heating at the top). The range of Rayleigh numbers was R=2.68·103−2.57·105, and n=H/d=5.06−18.3. The investigation was carried out by an optical method, using an IZK-454 interferometer. For a horizontal orientation of the cavity the heat-transfer data satisfy the relation N=0.216 R0.25, for a vertical orientation N=0.144 R0.3h−0.129, where N is the Nusselt number. In the region of an inclination of ∼30° the heat transfer passes through a maximum under all conditions studied.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01205200
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