In this study, the configurations and arrangement of DJFC (Double Jet Film Cooling) holes were optimized by using the surface response method. As the design parameters, the lateral compound angles(β1, β2=14˚~ 18˚) and the area ratios of lower and ...
In this study, the configurations and arrangement of DJFC (Double Jet Film Cooling) holes were optimized by using the surface response method. As the design parameters, the lateral compound angles(β1, β2=14˚~ 18˚) and the area ratios of lower and upper cooing holes(A1/A2=0.75~1.33) were considered, when the total area values of cooling holes were kept being constant. Numerical analysis was performed by using ANSYS CFX 14.5 with SST (Shear Stress Transport) turbulent model. The optimum configuration was chosen and relevant mechanisms for the enhanced cooling performance were elucidated by investigations of flow and cooling characteristics. The film cooling effectiveness distributions of representative cases were graphically depicted with various geometrical configurations.