Fig. 1 ( a ) Side view of the domain, ( b ) top view and symmetric boundary condition, ( c ) fan-shaped injection outlet, ( d ) isometric view, and ( e ) side view of the fan-shaped lengths More about this image found in ( a ) Side view of the domain, ( b ) top view and symmetric boundary condit...

Fig. 2 Three-dimensional computational domain and identification of the region of interest (the magnified coolant injection region) for analysis More about this image found in Three-dimensional computational domain and identification of the region of ...

Fig. 3 Grid independence study at several mesh sizes for ( a ) cylindrical injection case and ( b ) fan-shaped injection case More about this image found in Grid independence study at several mesh sizes for ( a ) cylindrical injecti...

Fig. 4 Turbulence model validation for ( a ) cylindrical injection case and ( b ) fan-shaped injection case More about this image found in Turbulence model validation for ( a ) cylindrical injection case and ( b ) ...

Fig. 5 Meshing of ( a ) fan-shaped injection outlet, ( b ) fan-shaped tube, ( c ) cylindrical injection outlet, ( d ) cylindrical tube, and ( e ) magnified view of injection tube and domain connection interface More about this image found in Meshing of ( a ) fan-shaped injection outlet, ( b ) fan-shaped tube, ( c ) ...

Fig. 6 Validation of the present numerical study with previous experimental data [ 34 , 35 ] for ( a ) cylindrical and ( b ) fan-shaped injection holes at BR = 0.6 More about this image found in Validation of the present numerical study with previous experimental data [...

Fig. 7 Variation of the centerline film cooling effectiveness with the stream-wise ( X / D ) distance for the fan-shaped and cylindrical holes at different BRs More about this image found in Variation of the centerline film cooling effectiveness with the stream-wise...

Fig. 8 Comparison of effectiveness at optimal BR range for a cylindrical (BR = 0.6 and 1.0) and fan-shaped hole (BR = 1.4) More about this image found in Comparison of effectiveness at optimal BR range for a cylindrical (BR = 0.6...

Fig. 9 Coolant jet length ( L 90 ) variation with blowing ratios for the fan-shaped injection More about this image found in Coolant jet length ( L 90 ) variation with blowing ratios for the fan-shap...

Fig. 10 Variation of the laterally average effectiveness of film cooling for ( a ) cylindrical and ( b ) fan-shaped injection holes at different X / D locations More about this image found in Variation of the laterally average effectiveness of film cooling for ( a ) ...

Fig. 11 The contour of cooling effectiveness over the adiabatic plane at various BRs for a cylindrical hole More about this image found in The contour of cooling effectiveness over the adiabatic plane at various BR...

Fig. 12 Surface streamlines overlaid with effectiveness contour for cylindrical injection at different X / D locations for a range of BR = 0.2–2.0 More about this image found in Surface streamlines overlaid with effectiveness contour for cylindrical inj...

Fig. 13 The contour of cooling effectiveness over the adiabatic plane at various blowing ratios for a fan-shaped hole More about this image found in The contour of cooling effectiveness over the adiabatic plane at various bl...

Fig. 14 Surface streamlines overlaid with effectiveness contour for fan-shaped injection at different X / D locations at varied blowing ratios range (BR = 0.2–1.0) More about this image found in Surface streamlines overlaid with effectiveness contour for fan-shaped inje...