Experimental and analytical study of natural convection heat transfer of internally heated fluids
Abstract
Boundary heat transfer from a liquid pool with a uniform internal heat source to a vertical or inclined boundary was investigated. In an open rectangular liquid pool in which the internal heat source was generated by electrical heating. The local heat flux was measured to a boron nitride test wall which was able to be continuously inclined from vertical. Under the assumption of laminar natural convection, it was found that the local heat transfer data could be empirically correlated by the relation Nu(x) = 0.153 Ra(x) to the 0.25 power with a standard deviation in the coefficient of + or  14%, and the average heat transfer data could be empirically correlated by bar Nu = 0.127Ra(L) to the 0.25 power with a standard deviation in the coefficient of + or  8%. The component of the gravitational acceleration along the wall, was found to help account for the inclination of the boundary although some systematic effect was still evident in the data.
 Publication:

Ph.D. Thesis
 Pub Date:
 1981
 Bibcode:
 1981PhDT........45G
 Keywords:

 Boundary Layer Equations;
 Convective Heat Transfer;
 Free Convection;
 Heat Sources;
 Heat Transfer Coefficients;
 Boron Nitrides;
 Gravitational Effects;
 Laminar Flow;
 Prandtl Number;
 Surface Temperature;
 Thermocouples;
 Wall Temperature;
 Fluid Mechanics and Heat Transfer