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ISSN Online: 2377-424X

ISBN Print: 0-89116-299-2

International Heat Transfer Conference 7
September, 6-10, 1982, Munich, Germany

EXPERIMENTAL MIXED CONVECTION FROM A LARGE, VERTICAL PLATE IN A HORIZONTAL FLOW

Get access (open in a dialog) DOI: 10.1615/IHTC7.2940
pages 477-482

Resumo

Mixed-convection heat transfer coefficients have been measured on a 3M × 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/Re2 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/Re2 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.