Abstract
In order to reduce not only the emission of carbon dioxide which is known to promote global warming but the consumption of fossil fuel gas turbines are always requested to be highly efficient. In the turbine section, highly efficient is achieved by increasing the turbine inlet temperature. Film cooling is intensively used to cool the turbine section. And film cooling performance is improved by varying the various parameters cooling holes shape, the angle, etc. This paper details the cooling hole compound angle to inhibit Counter Rotating Vortex Pair (CRVP), which invite the cooling performance degradation. Reynolds-Averaged Navier-Stokes simulations have been conducted for the case of compound angle = 0, 30, 60 [deg]. According to results of numerical analysis, the cooling performance of compound angle = 30 and 60 [deg] is better than that of compound angle = 0 [deg].
