Combined cooling of perforated plates in contact with a turbulent stream of gas
Abstract
The heat transfer coefficient is expressed as a sum of two components characterizing, respectively, the external heat loss and the heat loss within the internal channels of the wall. To determine the coefficient a special experiment was set up with electrically heated perforated plates. One side of these plates was carefully thermally insulated. Cooling air flowed over the uninsulated side of the plate, part of it flowing through the perforations into a channel maintained at a constant pressure. The heat transfer coefficient for a perforated wall with (pv) sub w = 0 is somewhat higher than that for a smooth wall, because of the additional heat transfer within the perforations.
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- December 1976
- Bibcode:
- 1976STIN...7725449G
- Keywords:
-
- Cooling;
- Perforated Plates;
- Steam Flow;
- Turbulent Flow;
- Analysis (Mathematics);
- Experimentation;
- Heat Transfer Coefficients;
- Thermal Insulation;
- Fluid Mechanics and Heat Transfer