Experimental study of natural convection in thin horizontal liquid layers
Approved for public release; distribution unlimited. === Heat transfer through a very thin horizontal liquid layer bounded on top by a cooled glass plate and on bottom by a heated copper plate was measured. Results were correlated in terms of Nusselt number as a function of Rayleigh number. Thre...
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| Language: | en_US |
| Published: |
2012
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| Online Access: | http://hdl.handle.net/10945/18123 |
| Summary: | Approved for public release; distribution unlimited. === Heat transfer through a very thin horizontal liquid
layer bounded on top by a cooled glass plate and on bottom
by a heated copper plate was measured. Results were
correlated in terms of Nusselt number as a function of
Rayleigh number. Three different liquids were used under
conditions to give a range of Rayleigh number from 350 to
4100 and Prandtl number from 34 to 477. Up to a critical condition heat is transferred by
conduction alone. Convection appears when Ra = 1600 ± 100.
A correlation for critical Rayleigh number as a function of
Prandtl number was obtained. |
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