Heat transfer with film cooling within and downstream of one to four rows of normal injection holes
Abstract
Results are presented from experimental measurements of heat-transfer rates on surfaces which are cooled by injection through one to four rows of evenly spaced, flush, normal injection holes arranged in staggered and in-line patterns with hole spacings of 4.8 dia. Film cooling performance is evaluated in both the injection and downstream recovery regions from transient tests which provide a uniform wall temperature boundary condition. Both the film and mainstream fluids are air, and film-to-mainstream mass velocity ratios of 0.1, 0.2, 0.3, and 0.5 are covered.
- Publication:
-
Gas Turbine Conference and Products Show
- Pub Date:
- March 1976
- Bibcode:
- 1976gatu.confS....M
- Keywords:
-
- Air Flow;
- Convective Heat Transfer;
- Film Cooling;
- Fluid Injection;
- Heat Transfer Coefficients;
- Calorimeters;
- Conductive Heat Transfer;
- Energy Dissipation;
- Graphs (Charts);
- Mass Transfer;
- Velocity Distribution;
- Wall Temperature;
- Fluid Mechanics and Heat Transfer