The temperature field above a concentrated heat source on a vertical adiabatic surface
Abstract
Detailed measurements are presented for the laminar temperature field above a highly localized heat source on a transparent vertical adiabatic surface in water through the use of thermocouples and a Schlieren optical system. The physical parameters measured for a range of heat source strength are the surface temperature decay directly above the heat source, the centerplanenormal temperature distribution in the fluid, the spanwisesurface temperature distribution, the spanwise and normal thermal boundarylayer thicknesses, and the variation of the source temperature with heat flux. Results of thermocouple measurements indicate that the surface temperature directly above a concentrated heat source follows a powerlaw variation with downstream distance, with the exponent of the parameter x (vertical distance above heat source) being equal to 0.77. The Schlieren photographs reveal that the thermal boundary layer thickness grows about linearly with x in the direction normal to the surface and very slowly (exponentially, in the spanwise direction, which is consistent with the detailed thermocouple measurements.
 Publication:

International Journal of Heat and Mass Transfer
 Pub Date:
 October 1977
 Bibcode:
 1977IJHMT..20.1059C
 Keywords:

 Adiabatic Conditions;
 Boundary Layer Flow;
 Heat Sources;
 Temperature Distribution;
 Three Dimensional Flow;
 Flow Geometry;
 Flow Visualization;
 Flux Density;
 Thermocouples;
 Fluid Mechanics and Heat Transfer