Experimental mixed convection from a large, vertical plate in a horizontal flow
Abstract
Mixed-convection heat transfer coefficients have been measured on a 3M x 3M vertical plate, parallel to a horizontal wind. Measurements were made at 105 locations on the plate, at each of 36 combinations of plate temperature and wind speed. The plate temperature was varied between 40 and 600 C, with wind speeds from 0 to 6 M/s. The region of mixed-convection effects on the average heat transfer from the plate lies between Gr/Re-squared values of 0.7 and 10.0. Outside that region, the average heat transfer coefficient can be calculated using correlations for pure forced or pure free convection. Boundary layer flow-angle measurements (not presented here) showed mixed convection effects on the hydrodynamics for all Gr/Re-squared values tested except pure free convection. Increasing the plate temperature at constant velocity caused transition to move upstream and reduced the slope of the heat transfer coefficient variation with x-distance in the turbulent region.
- Publication:
-
Heat Transfer 1982, Volume 3
- Pub Date:
- 1982
- Bibcode:
- 1982hetr....3..477S
- Keywords:
-
- Air Flow;
- Convective Heat Transfer;
- Flat Plates;
- Heat Transfer Coefficients;
- Wind Velocity;
- Forced Convection;
- Free Convection;
- Grashof Number;
- Nusselt Number;
- Reynolds Number;
- Wind Tunnel Tests;
- Fluid Mechanics and Heat Transfer