Abstract
Measurements are reported of the film cooling effectiveness and heat transfer following injection of air into a mainstream of air. A single row of circular injection holes inclined at an angle of 35 deg is used with a lateral spacing between the holes of three diameters. A low Reynolds number mainstream permits studying the influence of a laminar approaching boundary layer. Measurements of the surface heat transfer taken with no injection indicate that the hole openings can effectively trip the laminar boundary layer into a turbulent flow. The type of the approaching boundary layer has relatively little influence on either the adiabatic effectiveness or the heat transfer with film cooling.
| Original language | English (US) |
|---|---|
| Journal | American Society of Mechanical Engineers (Paper) |
| Issue number | 81 -HT-38 |
| State | Published - Jan 1 1981 |